If you're looking for a specific word that starts with "prop," please provide more context.
Possible meanings:
* Prop (noun): A short form for "propeller," which is a rotating device used to move an aircraft or boat.
* Prop (noun): A short form for "propitiation," which refers to an act of appeasing or conciliating a deity or person.
* Prop (noun): A short form for "propellant," which is a substance that provides the thrust for a rocket or missile.
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