Jack in a sentence as a noun

We know jack about how the vast majority of biology works.

It sounds like such a great idea, but the reality is that fully covered tuition means jack **** when they are working 70-80 hours a week just to make rent and keep the lights on.

Jack in a sentence as a verb

It is a writing contest, and you can be sure that the Federal contract officer knows jack **** about the actual fundamentals of the project.

But even the prudent ones will be trying to jack up their salaries because there are SO many things you are supposed to save for to be considered a responsible American adult.

Jack definitions

noun

a small worthless amount; "you don't know jack"

noun

a man who serves as a sailor

See also: mariner seaman Jack-tar Jack seafarer

noun

someone who works with their hands; someone engaged in manual labor

See also: laborer labourer

noun

immense East Indian fruit resembling breadfruit; it contains an edible pulp and nutritious seeds that are commonly roasted

See also: jackfruit

noun

a small ball at which players aim in lawn bowling

noun

an electrical device consisting of a connector socket designed for the insertion of a plug

noun

game equipment consisting of one of several small six-pointed metal pieces that are picked up while bouncing a ball in the game of jacks

See also: jackstones

noun

small flag indicating a ship's nationality

noun

one of four face cards in a deck bearing a picture of a young prince

See also: knave

noun

tool for exerting pressure or lifting

noun

any of several fast-swimming predacious fishes of tropical to warm temperate seas

noun

male donkey

See also: jackass

verb

lift with a special device; "jack up the car so you can change the tire"

verb

hunt with a jacklight

See also: jacklight