Real Dictionary

prop
verb: If you prop an object on or against something, you support it by putting something underneath it or by resting it somewhere.

prop in American English 1
a rigid support, as a beam, stake, or pole, placed under or against a structure or part
to support, hold up, or hold in place with or as with a prop
noun: a stick, rod, pole, beam, or other rigid support
transitive verb: to support, or prevent from falling, with or as if with a prop

prop in American English 2
property (sense 7)
noun

prop in American English 3
propeller
noun: a propeller

prop in American English 4
proper(ly)

prop in British English 1
noun: something that gives rigid support, such as a stick
verb: to support with a rigid object, such as a stick

prop in British English 2
noun

prop in British English 3
noun

prop. in American English
abbreviation: properly