cottar or cotter /kotˈər/

1. One of a class of medieval villeins
2. A peasant occupying a cot or cottage for which he has to give labour (Scot)

• oarsmen
• oarswoman
• oarswomen
• oarweed
• oary
• oas
• OAS
• oases
• oasis
• oast
• oast house
• oast houses
• oasts
• oat
• oatcake
• oatcakes
• oaten
• oater
• oaters
• oat grass
• oat grasses
• oath
• oathable
• oath-breaking
• oaths