Webster’s Revised Unabridged Dictionary · 1913
Scapula
Scap′u·la (skăp′ū·lȧ), n.; pl. L. Scapulæ (#), E. Scapulas (#). [L.] 1. (Anat.) The principal bone of the shoulder girdle in mammals; the shoulder blade.
2. (Zoöl.) One of the plates from which the arms of a crinoid arise.