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Antofagasta
antonomasia
antonym
antra
Antrim
Antrim Coast and Glens
Antron
antrostomy
antrum
antsy
Antwerp
ANU
añu
Anubis
anuran
anuria
anurous
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antrum
an·trum [ ántrəm ] (plural an·tra [ ántrə ])


noun 
Definition:
 
cavity in bone: a cavity within a bone, especially a sinus cavity
[Early 19th century. Via Latin, "cave" < Greek antron]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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