Meaning

noun a position particularly well suited to the person who occupies it

noun a small concavity

noun an enclosure that is set back or indented

originUnadapted borrowing from French niche, from Middle French niche, from Old French niche, from nicher (“to make a nest”) (modern French nicher), from Vulgar Latin *nīdicāre, from Latin nīdus (“nest”). Doublet of nidus and nide via Latin and nest via Proto-Indo-European; also related to nyas.

Etymology from Wiktionary, CC BY-SA 3.0