释义 |
coom I. noun or coomb \ˈküm\ (-s) Etymology: Middle English culme — more at culm 1. dialect Britain a. : soot, smut b. : coal dust or coal slack 2. : grease exuding from axle boxes or bearings II. noun or coomb \“\ (-s) Etymology: origin unknown Scotland : the wooden centering or frame on which a masonry arch is built |