| CROSSJACKS | • crossjacks n. Plural of crossjack. • CROSSJACK n. a square sail set on the mizzenmast. |
| JACKASSERY | • jackassery n. The foolish or obnoxious behaviour of a jackass. • JACKASSERY n. being a jackass. |
| JACKETLESS | • jacketless adj. Without a jacket (coat). • jacketless adj. Without a jacket (book cover). • JACKETLESS adj. without a jacket. |
| JACKFISHES | • jackfishes n. Plural of jackfish. • JACKFISH n. a food fish. |
| JACKSCREWS | • jackscrews n. Plural of jackscrew. • jack␣screws n. Plural of jack screw. • JACKSCREW n. a jack in which a screw is used for lifting, or exerting pressure. |
| JACKSHAFTS | • jackshafts n. Plural of jackshaft. • JACKSHAFT n. an intermediate shaft e.g. between a motor and the wheels it drives. |
| JACKSMELTS | • jacksmelts n. Plural of jacksmelt. • JACKSMELT n. a large fish of the Pacific coast of North America. |
| JACKSMITHS | • jacksmiths n. Plural of jacksmith. • JACKSMITH n. a smith who makes jacks. |
| JACKSNIPES | • jacksnipes n. Plural of jacksnipe. • JACKSNIPE n. a kind of snipe. |
| JACKSTAFFS | • jackstaffs n. Plural of jackstaff. • jack-staffs n. Plural of jack-staff. • JACKSTAFF n. a short staff at a ship's bow, on which a jack is hoisted. |
| JACKSTAVES | • jackstaves n. Plural of jackstaff. • JACKSTAFF n. a short staff at a ship's bow, on which a jack is hoisted. |
| JACKSTONES | • jackstones n. Plural of jackstone. • JACKSTONE n. a piece used in the game of jacks. |
| JACKSTRAWS | • jackstraws n. Plural of jackstraw. • JACKSTRAW n. an effigy stuffed with straw; a scarecrow; hence, a man without property or influence. |
| JINRIKSHAS | • jinrikshas n. Plural of jinriksha. • JINRIKSHA n. (Japanese) a small, two-wheeled hooded carriage drawn by a man or men, also JINRICKSHA, JINRICKSHAW, JINRIKISHA, RICKSHA, RICKSHAW, RIKISHA, RIKSHAW. |
| JOCKSTRAPS | • jockstraps n. Plural of jockstrap. • jock␣straps n. Plural of jock strap. • JOCKSTRAP n. a genital support worn esp. by men participating in athletics. |
| SKYJACKERS | • skyjackers n. Plural of skyjacker. • SKYJACKER n. one who skyjacks, hijacks an aeroplane. |
| SMOKEJACKS | • smokejacks n. Plural of smokejack. • smoke␣jacks n. Plural of smoke jack. • SMOKEJACK n. a contrivance for turning a spit by means of a fly or wheel moved by the current of ascending air in a chimney. |