skull cap

• n.
  • rounded brimless cap fitting the crown of the head

    同义词： skullcap

  • a herbaceous plant of the genus Scutellaria which has a calyx that, when inverted, resembles a helmet with its visor raised

    同义词： skullcap helmetflower

  • the dome of the skull

    同义词： calvaria skullcap

以上来源于: WordNet