From Middle French, from Old French terne (“dull, dim”), from Frankish *tarni (“hidden, obscure”), from Proto-Germanic *darnijaz (“concealed, masked, veiled”), from Proto-Indo-European *dher(ǝ)-, *dhrē- (“to hold, hold tight, support”). Cognate with Old High German tarni (“hidden”), Old English dyrne, dierne (“hidden, secret, obscure, concealed”). More at dern.
terne m (plural ternes)
- (obsolete) trinity, gathering of three people
- (backgammon, dice) double-three
- (bingo) three in a row
- "terne" in le Trésor de la langue française informatisé (The Digitized Treasury of the French Language).