skullcap

noun

skull·​cap ˈskəl-ˌkap 

1

: a close-fitting cap

especially : a light brimless cap for indoor wear

2

: any of various mints (genus Scutellaria) having a bell-shaped calyx that when inverted resembles a helmet

3

: the upper portion of the skull : calvarium

Examples of skullcap in a Sentence

Recent Examples on the Web

About five minutes later, the investigator says a man wearing a yarmulke, the skullcap traditionally worn by many Jewish men, was waiting to cross the street at West 45th Street and Sixth Avenue, court records show. — Mark Morales, CNN Money, 26 Oct. 2026

Synagogues canceled Sabbath prayers, while terrified Jewish citizens were warned to conceal skullcaps and flee home. — Staff, FOXNews.com, 22 Oct. 2026

The formula draws upon plant extracts like cypress leaf and skullcap to reduce oil production, while willow bark extract and lactic acid clear out impurities, giving the appearance of visibly smaller pores. — Kiana Murden, Vogue, 25 Sep. 2026

Then there’s Baicapil, a blend of baikal skullcap (a flowering plant native to East Asia), wheat germ, and soybean germ extracts intended to encourage a healthy hair-growth cycle. — Christa Joanna Lee, Allure, 28 Aug. 2026

Word History

First Known Use

1682, in the meaning defined at sense 1

Rhymes for skullcap

• bandgap
• bitmap
• blackcap
• blackstrap
• bootstrap
• burlap
• claptrap
• entrap
• foolscap
• kidnap
• kneecap
• madcap

Kids Definition

skullcap

noun

skull·​cap ˈskəl-ˌkap 

: a close-fitting cap

especially : a light cap without brim for indoor wear

Medical Definition

skullcap

noun

skull·​cap ˈskəl-ˌkap 

: the upper portion of the skull : calvarium