butt knuckle
noun
: a projection shaped like a knuckle usually of metal and designed to receive pressure (as from a window pole)
Word History
Etymology
butt entry 2
- Anthra Green B
- anthra-
- anthrac-
- anthracene
- anthracene blue
- anthracene brown
- anthracene dye
- anthracene oil
- anthracenes
- anthraces
- anthraciferous
- anthracite
- anthracite silt
- anthracites
- anthracitic
- anthracitization
- anthracitous
- anthracnose
- anthracnoses
- anthraco-
- anthracocide
- anthracolithic
- Anthracomarti
- anthracomartian
- anthracosaur