antrum /anˈtrəm/ (esp anatomy)

A cavity

• police offices
• police procedural
• polices
• police state
• police states
• police station
• police stations
• police trap
• police traps
• policewoman
• policewomen
• Polichinelle
• policies
• policing
• policy
• policyholder
• policyholders
• policy-shop
• policy-shops
• poling
• polings
• polio
• poliomyelitides
• poliomyelitis
• poliorcetic