nailbrush /ˈneɪl.bɹʌʃ/noun 1verb 1forms 3 noun1 •A small brush, with firm bristles, used to clean the fingernails or to scrub the hands.Rupert Sheffield, scrubbing John's blood from his hands with a nailbrush and hospital soap, swore that this was the last time [...] that he would have to do this. — 2016 verb1 •To scrub with a nailbrush. formsnailbrushed · nailbrushing · nailbrushes