—adj. shaped like a woman's breast.
—n.
1 = mastoid process.
2 colloq. mastoiditis.
Phrases and idioms:
mastoid process a conical prominence on the temporal bone behind the ear, to which muscles are attached.
Etymology: F mastoiumlde or mod.L mastoides f. Gk mastoeides f. mastos breast
Useful english dictionary. 2012.