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

He's shown wearing a black skullcap, black facemask on his chin, red sweatshirt and red sweatpants, and sneakers. — Jesse Zanger, CBS News, 30 Mar. 2026

The man had a squarish white beard and a dark chasia, or skullcap, and his eyes were like my father's—soft and a little sad, with the eyelids drooping at the outer corners. — Saki Knafo, Condé Nast Traveler, 19 Jan. 2023

Altuzarra delivered both structured pillboxes and delicate skullcaps that feel timeless yet current. — Andrea Zendejas, Vogue, 19 Dec. 2025

Many Jews are increasingly avoiding visible signs of their identity, such as wearing a Star of David or a kippah, or Jewish skullcap, amid fears of harassment. — Efrat Lachter, FOXNews.com, 5 May 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