kəmˈpresə(r) noun
( -s )
Etymology: Latin, from compressus (past participle of comprimere to compress) + -or
: one that compresses: as
a. : a muscle that compresses a part or parts
b. : a machine (as a pump or an engine part) that compresses air, fuel-air mixtures, or other gases — see jet engine illustration
c. nautical : a device for checking a line or cable
d. : a device that introduces intentional compression into a communications signal