os

os

os¹ [ōs]

n.

pl. osar [ō′sär΄] [Swed ås, ridge, pl. åsar < ON āss < IE base * omso-, shoulder > Gr ōmos, L umerus, shoulder]

ESKER

os² [äs]

n.

pl. ossa [äsə] [L: see OSSIFY]

a bone

os³ [äs]

n.

pl. ora [ō′rə, ôr′ə] [L: see ORAL]

a mouth; opening