1861, abbreviation of cooperative. The hyphen is needed to avoid confusion with coop (n.).
: There were the cats, the milkmen, and the cops cooping in a police car at the corner
Related Termsfly the coop, hencoop, in the coop, rain cats and dogs
[police senses based on earlier coop, ''any shelter used by the police to avoid the elements''; fr chicken coop]
: co-op prices/ coop apartment complex
nounA cooperative apartment house, store, etc (1870s+)
verbTo convert an apartment or building from a rental to a cooperative unit: The old Sussex Arms got co-oped last year (1950s+)