noun

1. 1. a mechanical device for fastening things together, consisting essentially of a cylindrical or conical piece of metal threaded evenly around its outside surface with an advancing spiral ridge and commonly having a slotted head: it penetrates only by being turned, as with a screwdriver
      also called male screw
   2. the internal thread, or helical groove, as of a nut, into which a male screw, bolt, etc. can be turned
      also called female screw
   3. the act or an instance of turning such a screw
2. any of various devices operating or threaded like a screw, as a jackscrew or screw propeller
3. 1. anything that spirals or twists like the thread of a screw
   2. the act of spiraling, twisting, or moving like this
4. Slang a prison guard
5. Chiefly Brit. a small amount of tobacco, salt, etc. in a twist of paper
6. Chiefly Brit., Slang
   1. a stingy person; miser
   2. a crafty bargainer
   3. a worn-out horse
7. Brit., Slang a salary
8. Slang, Vulgar
   1. an act or instance of sexual intercourse
   2. a person with whom one engages in sexual intercourse, often, specif., one of specified competence

Etymology: ME screwe < MFr escroue, hole in which the screw turns < L scrofa, sow, infl. by scrobis, vulva

transitive verb

1. to twist; turn; tighten
2. 1. to fasten, make secure, tighten, insert, etc. with or as with a screw or screws
   2. to put together or take apart with a screwlike motion
3. to twist out of natural shape; contort to screw one's face up
4. to make stronger; intensify: often with up
5. to force or compel, as if by using screws
6. Slang
   1. to cheat; swindle
   2. to treat unfairly
7. Slang, Vulgar to have sexual intercourse with

intransitive verb

1. to go together or come apart by being turned or twisted in the manner of a screw a lid that screws on
2. to twist; turn; wind; have a motion like that of a screw
3. Slang, Vulgar to engage in sexual intercourse