hollow bone n.
See pneumatic bone.
[hol-oh-fawrj, -fohrj] /ˈhɒl oʊˈfɔrdʒ, -ˈfoʊrdʒ/ verb (used with object), hollow-forged, hollow-forging. 1. to produce (a tube or vessel) by trepanning a hole in a forging and expanding it with further forging on a mandrel.
[hol-oh-ahyd] /ˈhɒl oʊˌaɪd/ adjective 1. having sunken eyes. adjective 1. with the eyes appearing to be sunk into the face, as from excessive fatigue
[hol-oh-ground] /ˈhɒl oʊˈgraʊnd/ adjective 1. ground so as to produce a concave surface or surfaces behind a cutting edge: the hollow-ground blade of an ice skate.
[hol-oh] /ˈhɒl oʊ/ adjective, hollower, hollowest. 1. having a space or cavity inside; not solid; empty: a hollow sphere. 2. having a depression or concavity: a hollow surface. 3. sunken, as the cheeks or eyes. 4. (of sound) not resonant; dull, muffled, or deep: a hollow voice. 5. without real or significant worth; meaningless: a […]