| Jacobean: From the Latin Jacobus. General term for English styles up to 1688. It is composed of the furniture built during the reigns of James I, Charles I, Cromwell, Charles II, James II. | | |
| Jigsaw: Saw for cutting interior work, such as pierced work, fretwork, latticework, etc. Originally operated by a treadle, it was one of the first machines to which power was applied. As a consequence, jigsawed detail is typical of the earliest machine age in the 19th Century. | |