two words; a few words
Literally 'two words', but often used to mean just a few words or a brief utterance. Common in set phrases like 二言目には (at every turn, invariably).
repetition; saying twice
Refers to saying the same thing twice or repeating oneself. Often used in negative contexts like 二言はない (I won't say it twice; I mean what I say).
I won't say it twice; my word is final.
He brings up money at every turn.
Please explain it in a few words.
Compound of 二 (two) and 言 (word/speech). The meaning 'repetition' likely developed from the idea of saying something twice.