knuck·le·head 
(nŭkəl-hĕd′)
(nŭkəl-hĕd′)n.
Informal
Informal
A stupid person; a blockhead.
- peroxy-
- peroxyacetyl nitrate
- perp
- perp.
- perpend
- perpendicular
- perpendicularity
- perpendicularly
- perpetrate
- perpetration
- perpetrator
- perpetual
- perpetual calendar
- perpetually
- perpetual motion
- perpetuance
- perpetuate
- perpetuation
- perpetuator
- perpetuity
- perphenazine
- Perpignan
- perplex
- perplexed
- perplexedly