Mastoid

from WordNet (r) 3.0 (2006)

mastoid
    adj 1: of or relating to or in the region of the mastoid process
    2: relating to or resembling a nipple [syn: {mastoid},
       {mastoidal}]
    n 1: process of the temporal bone behind the ear at the base of
         the skull [syn: {mastoid}, {mastoid process}, {mastoid
         bone}, {mastoidal}]

from The Collaborative International Dictionary of English v.0.48

Mastoid \Mas"toid\, a. [Gr. ?; masto`s the breast + e'i^dos
   form: cf. F. masto["i]de.] (Anat.)
   (a) Resembling the nipple or the breast; -- applied
       specifically to a process of the temporal bone behind the
       ear.
   (b) Pertaining to, or in the region of, the mastoid process;
       mastoidal.
       [1913 Webster]

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