| BOOTJACKS | • bootjacks n. Plural of bootjack. • bootjacks v. Third-person singular simple present indicative form of bootjack. • BOOTJACK n. a device for pulling off boots. |
| JACKBOOTS | • jackboots n. Plural of jackboot. • jack-boots n. Plural of jack-boot. • jack-boots v. Third-person singular simple present indicative form of jack-boot. |
| JACKSHAFT | • jackshaft n. A common mechanical component used to transfer or synchronize rotational force in a machine. • jackshaft n. A wheelless axle used to turn the wheels of a locomotive. • jackshaft v. To transfer or synchronize rotational force by means of a jackshaft. |
| JACKSMELT | • jacksmelt n. Atherinopsis californiensis, an edible neotropical silverside native to the Pacific coast of North America. • JACKSMELT n. a large fish of the Pacific coast of North America. |
| JACKSMITH | • jacksmith n. A smith who makes jacks. • JACKSMITH n. a smith who makes jacks. |
| JACKSTAFF | • jackstaff n. (Nautical) a short spar, at the bows of a ship, that serves as a flagpole to fly a flag (a jack). • jack-staff n. Alternative spelling of jackstaff. • JACKSTAFF n. a short staff at a ship's bow, on which a jack is hoisted. |
| JACKSTAYS | • jackstays n. Plural of jackstay. • JACKSTAY n. an iron or wooden bar running along the yard of a ship to which sails are fastened. |
| JACKSTONE | • jackstone n. A jack; one of the playing pieces in the game of jacks. • JACKSTONE n. a piece used in the game of jacks. |
| JACKSTRAW | • jackstraw n. (Usually plural) One of the pieces used for the game called jackstraws or pick-up sticks. • jackstraw n. (Dated) An insignificant person. • jackstraw adj. Resembling a bundle of jackstraws that has been strewn on a surface. |
| JOCKSTRAP | • jockstrap n. (Sports) An athletic supporter worn by men and boys to support the genitals during strenuous exercise. • jock␣strap n. Alternative form of jockstrap. • JOCKSTRAP n. a genital support worn esp. by men participating in athletics. |
| REJACKETS | • rejackets v. Third-person singular simple present indicative form of rejacket. • REJACKET v. to clothe in a jacket once more. |
| STICKJAWS | • stickjaws n. Plural of stickjaw. • STICKJAW n. a sweet meat. |