/truy ath"leuhn/ , n.
1. an athletic contest comprising three consecutive events, usually swimming, bicycling, and distance running.
2. a women's track-and-field competition comprising the 100-meter dash, high jump, and shot put.
3. Brit. a competition comprising fly-casting, horseback-riding, and trapshooting events.
[ 1970-75; TRI- + (DEC)ATHLON ]