Wiktionary
trikonasana
n. (context asana English) A pose in which the legs are kept straight and wide apart, in the shape of a triangle, while the upper body bends.
Wikipedia
Trikonasana
Trikonasana (; ; IAST: trikoṇāsana) or Triangle Pose is an asana. Variations include utthita trikonasana (extended triangle pose), baddha trikonasana (bound triangle pose) and parivrtta trikonasana (revolved triangle pose).