cash, or collect, on delivery (payment to be made when delivered to the purchaser).
Origin of C.O.D.
An Americanism dating back to 1855–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
abbreviation of cash on delivery, 1859, originally American English.
Online Etymology Dictionary, © 2010 Douglas Harper