antrum /anˈtrəm/ (esp anatomy)

A cavity

anˈtral adjective

• mill-eyes
• mill girl
• mill girls
• millhand
• millhands
• mill-head
• mill-heads
• mill-horse
• mill-horses
• milli-
• milliampere
• milliamperes
• Millian
• milliard
• milliards
• milliare
• milliares
• milliaries
• milliary
• millibar
• keratinises
• keratinising
• keratinization
• keratinizations
• keratinize