"jack" 的定义和意义

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

a mechanical device for lifting heavy objects or vehicles

a card with a rank of eleven in a standard deck of playing cards, often depicted as a male figure with a special value or power in many card games

small flag indicating a ship's nationality

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

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

a small ball at which players aim in lawn bowling

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

a man who serves as a sailor

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

a small worthless amount