boy-short adjective 1noun 1forms 3 adjective1 •As short as that usually found on boys.Her hair was black and cut boy-short. — 2014 noun[before a noun]1 •Boyshort.Most of the choices accentuated my nearly flat chest and butt, but this one,with its pushup bra and boy-short bottoms, almost (almost) makes me look curvaceous. — 2008 formsboy-shorts · more boy-short · most boy-short