tonsure UK /ˈtɒn.ʃə(ɹ)/US /ˈtɑn.ʃɚ/noun 2verb 1forms 3 noun2 •The hairstyle and characteristic bald patch resulting from being tonsured. •A ritual shaving of this kind. verb1 •To shave the crown of the head of (a person) as a sign of humility and religious vocation. formstonsured · tonsuring · tonsures