screw

   1. (of a male) to

   copulate with

   Referring to the entry into a reciprocal aperture:

    'Well you, Howard,' says Flora, 'who did you screw last night?' (Bradbury, 1975)

   Either sex may be said to screw around, to copulate indiscriminately:

    Blokes who screw girls who screw around a lot are usually blokes who screw around a lot. (Amis, 1978)

   A screw is a female sexual partner, always with a laudatory adjective. As I note elsewhere, in male vanity or fantasy, there are no bad screws.

   Also figurative use as an expletive:

    She was drowned out by a chorus of 'Screw the profiteers'. (Hailey, 1979)

   2. a prison warder

   Not from turning the key in the lock so much as from tightening the screw on the apparatus on which a prisoner underwent forced exercise, or hard labour:

    ... known as a hard-boiled screw. (Lavine, 1930)

   3. to cheat

   A venerable standard English usage, from the accentuated application of force implicit in the screwing process. It is the victim who usually so refers to his plight in the passive sense:

    Your chance of being screwed by a Canadian factory owner then were as good as your chance of being screwed by an American factory owner. (Sunday Night Toronto, 12 February 1974)