Definition of "Cod" :

noun: major food fish of Arctic and cold-temperate waters

noun: lean white flesh of important North Atlantic food fish; usually baked or poached

noun: the vessel that contains the seeds of a plant (not the seeds themselves)

verb: harass with persistent criticism or carping

verb: fool or hoax

adjective: payable by the recipient on delivery

"A COD parcel."

adverb: collecting the charges upon delivery