cop (n.) Look up cop at Dictionary.com
"policeman," 1859, abbreviation of earlier copper (n.2), 1846, from cop (v.).
cop (v.) Look up cop at Dictionary.com
1704, northern British dialect, "to seize, to catch," perhaps ultimately from Middle French caper "seize, to take," from Latin capere "to take" (from PIE root *kap- "to grasp"); or from Dutch kapen "to take," from Old Frisian capia "to buy," which is related to Old English ceapian (see cheap). Related: Copped; copping.