Added 10 October 2026 cain noun Categories: PeopleUncommon Words noun ! Definition from WordNet 3.1, Princeton University. More about cain at Wordnik → Where our words come from → (Old Testament) Cain and Abel were the first children of Adam and Eve born after the Fall of Man; Cain killed Abel out of jealousy and was exiled by God. Related Words: abelkainkentubalqinkeanelevinekeancaimkennslayerfratricide Back to today's word