1
general::
Phrase(s): send something C.O.D.
to send merchandise to someone who will pay for it when it is delivered. (C.O.D. means "cash on delivery" or "collect on delivery.") • I asked them to send the book C.O.D. • This person has ordered a copy of our upcoming release. Send it C.O.D.
McGrawhill's American Idioms And Phrasal Verbs