"medieval martial arts contest," c. 1200 (figurative), c. 1300 (literal), from Old French tornement "contest between groups of knights on horseback" (12c.), from tornoier "to joust, tilt, take part in tournaments" (see tourney). Modern use, in reference to games of skill, is recorded from 1761.
tour
tour de force
tourism
tourist
tourmaline
tournament
tournedos
tourney
tourniquet
tousle
Toussaint