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