chaperone meaning

Meaning of chaperone

What is the full meaning of chaperone

(French) a person who ensures propriety, esp. a married or older woman accompanying a young unmarried woman on social occasions [n -S] / to act as a chaperone, also CHAPERON [v CHAPERONED, CHAPERONING, CHAPERONES]

Example of the word chaperone placed on a Scrabble board.