1. A rotary engine that is a four-stroke internal-combustion engine without reciprocating parts
   - Wankel engine, Wankel rotary engine

Type of: rotary engine

• bough
• boughed
• boughless
• boughten
• bougie
• bouillabaisse
• bouillon
• bouillon cube
• boulder
• boulder clay
• boulder fern
• bouldered
• bouldering
• bouldery
• boule
• boulevard
• boulevardier
• bouleversement
• Boulez
• boulle
• bounce
• bounce back
• bounce out
• bounced check
• bounced cheque