skullcap

from WordNet (r) 3.0 (2006)

skullcap
    n 1: rounded brimless cap fitting the crown of the head
    2: a herbaceous plant of the genus Scutellaria which has a calyx
       that, when inverted, resembles a helmet with its visor raised
       [syn: {skullcap}, {helmetflower}]
    3: the dome of the skull [syn: {calvaria}, {skullcap}]

from The Collaborative International Dictionary of English v.0.48

Skullcap \Skull"cap`\, n.
   1. A cap which fits the head closely; also, formerly, a
      headpiece of iron sewed inside of a cap for protection.
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   2. (Bot.) Any plant of the labiate genus {Scutellaria}, the
      calyx of whose flower appears, when inverted, like a
      helmet with the visor raised.
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   3. (Zool.) The Lophiomys.
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   {Mad-dog skullcap} (Bot.), an American herb ({Scetellaria
      lateriflora}) formerly prescribed as a cure for
      hydrophobia.
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