Meaning

noun rounded brimless cap fitting the crown of the head

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

noun the dome of the skull

originEtymology tree English skull Late Latin [Term?]? Late Latin cappabor. Proto-West Germanic *kappā Proto-West Germanic *kappijā Old English cæppe Middle English cappe English cap English skullcap From skull + cap.

Etymology from Wiktionary, CC BY-SA 3.0