antrum /anˈtrəm/ (esp anatomy)

A cavity

• winterer
• winterers
• winter garden
• winter gardens
• wintergreen
• wintergreens
• winter-ground
• winter-grounded
• winter-grounding
• winter-grounds
• winter heliotrope
• winter heliotropes
• winterier
• winteriest
• wintering
• winterisation
• winterisations
• winterise
• winterised
• winterises
• winterising
• winterization
• winterizations
• winterize
• winterized