mo·tor·boat 
(mōtər-bōt′)
(mōtər-bōt′)n.
A boat propelled by an internal-combustion engine or other motor. Also called powerboat.
- Commines
- Commines
- commingle
- comminute
- comminution
- commiserate
- commiseration
- commiserative
- commiseratively
- commiserator
- commissar
- commissariat
- commissary
- commission
- commissionable
- commissionaire
- commissional
- commissioned officer
- commissioner
- commissionership
- commission merchant
- commission plan
- commissural
- commissure
- commissurotomy