large sea fish, mid-14c. (late 13c. in a surname, Thomas cotfich), of unknown origin; despite similarity of form it has no conclusive connection to the widespread Germanic word for "bag" (e.g. Old English codd, preserved in codpiece). Cod-liver oil known since at least 1610s, was recommended medicinally since 1783, but not popular as a remedy until after 1825.
named 1602 by English navigator Bartholomew Gosnold for the abundance of fish his men caught there. Cape Cod, in reference to houses reminiscent of New England architecture, is attested from 1916.
An abbreviation for “cash on delivery” or “collect on delivery.”