1. scapulae — de Vaan
scapulae 'shoulder-blades' [f.pl. a] (Naev.+) Pit. *skap-elo-. It. cognates: U. scapla [accsg.] 'shoufder(-blade)\ A semantic connection between "shoulder-blade" and 'shovel, spade' is quite natural, due to the form of a shoulder-blade. LIV derives scapulae from a root *(s)kep- from which Gr. κόπτω 'to hit1, Slav, kapati 'to dig' are derived, but Latin -a- cannot be explained from such a root Scapulae may belong to … — [de Vaan, s.v. scapulae, p. 557]