õlavöötmesse kuuluv lame kolmnurkne luu, paikneb rindkere tagapinnal II–VII roide kohal, liigestub rangluuga ja õlavarreluuga, ülajäset liigutavate lihaste alguskoht
a triangular bone, a pair of which form the back part of the shoulder girdle
either of a pair of large triangular bones lying one in each dorsal lateral part of the thorax, being the principal bone of the corresponding half of the shoulder girdle, and articulating with the corresponding clavicle or coracoid
