[ skuhl-kap ]
See synonyms for skullcap on
  1. a small, brimless close-fitting cap, often made of silk or velvet, worn on the crown of the head, as for religious functions.

  2. the domelike roof of the skull.

  1. Botany. any of various plants belonging to the genus Scutellaria, of the mint family, having a calyx resembling a helmet.

Origin of skullcap

First recorded in 1675–85; skull + cap1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use skullcap in a sentence

British Dictionary definitions for skullcap


/ (ˈskʌlˌkæp) /

  1. a rounded brimless hat fitting the crown of the head

  2. the nontechnical name for calvaria

  1. any of various perennial plants of the genus Scutellaria, esp S. galericulata, that typically have helmet-shaped flowers: family Lamiaceae (labiates)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012