ponytail /ˈpoʊniˌteɪl/noun 1verb 1forms 3 noun1 •A hairstyle where the hair is pulled back and tied into a single "tail" which hangs down behind the head. verb1 •To form (the hair) into a ponytail.“Don't mention it,” she said, ponytailing her hair and then sockbunning it with amazing speed. — 2017 formsponytailed · ponytailing · ponytails