| Jack | A policeman or detective; a military policeman. Also, a familiar appelation for a sailor. Also, variously applied to a serving-man or male attendant, a labourer, a man who does odd jobs, etc. Also, colloq. shortening of lumberjack. |
| Jack-afloat | According to The Sailor's Word-Book, published in 1867 by William Henry Smyth, this was a name for a "sailor." |
| Jack-In-The-Bread-room | According to The Sailor's Word-Book, published in 1867 by William Henry Smyth, this was a name for a "purser's steward's assistant in the bread and steward's room." |
| Jack Ketch | According to the 1811 Dictionary Of The Vulgar Tongue, by Captain Grose, this was a name for a hangman. |
| Jackman | According to The Sailor's Word-Book, published in 1867 by William Henry Smyth, this was a name for a "musketeer of former times, wearing a short mail jack or jacket." |
| Jack-Nasty-Face | According to the 1811 Dictionary Of The Vulgar Tongue, by Captain Grose, this was a name for a common sailor. According to The Sailor's Word-Book, published in 1867 by William Henry Smyth, this was a name for a "cook's assistant." |
| Jacksmith | A maker of roasting-jacks. In this case the phrase roasting-jack refers to a contrivance for turning meat, etc., while it is being roasted. |
| Jack-tar | A familiar appelation for a common sailor. |
| Jagar | A variation in the spelling of the name: jagger. |
| Jaggar | A variation in the spelling of the name: jagger. |
| Jagger | A carrier, a carter. A pedlar, a hawker. Also, a man who carries ore on packhorses from a mine to the place where it is smelted. |
| Jailer | A variation in the spelling of the name: jailor. |
| Jaileress | A variation in the spelling of the name: jailoress. |
| Jailor | One who has charge of a jail or of the prisoners in it; a jail-keeper. |
| Jailoress | A female jailor. |
| Jakes-farmer | A man employed to clean out privies. |
| Janitor | A door-keeper, porter, ostiary. Also, a caretaker of a building. |
| Janitrix | A female janitor. |
| Jarvis | According to the 1811 Dictionary Of The Vulgar Tongue, by Captain Grose, this was a name for a hackney coachman. |
| Jaylor | A variation in the spelling of the name: jailor. |
| Jaylour | A variation in the spelling of the name: jailor. |
| Jemmy-duck | According to The Sailor's Word-Book, published in 1867 by William Henry Smyth, this was a name for a "ship's poulterer." |
| Jerquer | A custom-house officer, a searcher. A clerical officer who examines and checks a ship's papers, to see that all the cargo has been duly entered and described. |
| Jester | A professional reciter of romances. Also, a mimic, buffoon, or merry-andrew; any professed maker of amusement, esp. one maintained in a prince's court or nobleman's household. |
| Jet | According to the 1811 Dictionary Of The Vulgar Tongue, by Captain Grose, this was a name for a lawyer. |
| Jeweler | An artist who works in precious stones, etc.; a maker of jewels; a dealer in jewels and jewelry |
| Jeweller | A variation in the spelling of the name: jeweler |
| Jigger | In mining, one who dresses or 'jigs' ore. |
| Jobber | One who does jobs or odd pieces of work; one employed to do a job; a hack, one employed by the job, as distinguished from one continuously engaged and paid wages; a piece-worker. Also, one who lets out horses, etc. on hire for a particular job, or for a period; a job-master. Also, one who buys goods, etc. in bulk from the producer or importer, and sells them to retail dealers, or to consumers; a broker, a middleman; a small trader or salesman. Jobber is used for one that buys or sells cattle for others. [According to A New Law Dictionary, by Giles Jacob, 1744] |
| Jobbing-master | A variation in the spelling of the name: jobmaster. |
| Jobler | A variation in the spelling of the name: jobber. |
| Jobmaster | A man who keeps a livery stable and lets out horses and carriages by the job or for a definite period. Also, a master printer who does job-work. |
| Jobmistress | A woman who lets out horses and carriages. |
| Jobmonger | A variation in the spelling of the name: jobber. |
| Jobsmith | A smith who does miscellaneous jobs. |
| Jobster | A variation in the spelling of the name: jobber. |
| Joiner | One who joins, connects, unites. Also, a craftsman whose occupation it is to construct things by joining pieces of wood; a worker in wood who does lighter and more ornamental work than that of a carpenter, as the construction of the furniture and fittings of a house, ship, etc. |
| Jolter | A variation in the spelling of the name: jowter. |
| Jorneiman | A variation in the spelling of the name: journeyman. |
| Joskin | According to the 1811 Dictionary Of The Vulgar Tongue, by Captain Grose, this was a name for a countryman. |
| Journchopper | Journchoppers were regrators of yarn, which formerly perhaps was called journ. [According to A New Law Dictionary, by Giles Jacob, 1744] |
| Journeyman | One who, having served his apprenticeship to a handicraft or trade, is qualified to work at it for day's wages. Also, one who is not a 'master' of his trade or business. |
| Jouster | A hawker of fish. Also, one who jousts or fights on horseback with a spear, in battle or (esp. in later use) in tournament; a tilter; hence, an antagonist. |
| Jowder | A variation in the spelling of the name: jowter. |
| Jowster | A variation in the spelling of the name: jowter. |
| Jowter | A fish-hawker. Also, a hawker or pedlar of any kind. |
| Joyner | A variation in the spelling of the name: joiner. |
| Joynour | A variation in the spelling of the name: joiner. |
| Justice | Signifies an Officer deputed by the King to administer Justice, and do right by way of Judgement. [According to A New Law Dictionary, by Giles Jacob, 1744] |
| Justices of the Peace | Justices of the Peace are those that are appointed by the King's Commission to keep the Peace of the county where they dwell. [According to A New Law Dictionary, by Giles Jacob, 1744] |
| Justicier | A justice or justicer. In the Court of King's Bench , justice wa anciently administered sometimes by the King, and sometimes by the High Justicier; who was an officer of very great authority. [According to A New Law Dictionary, by Giles Jacob, 1744] |
| Justitia | A judge. [According to A New Law Dictionary, by Giles Jacob, 1744] |
