tonsure/ˈtɔnʃə(r); `tɑnʃɚ/ n1 [U] shaving the top or all of the head of a person about to become a priest ormonk （做僧侣时的）削发.2 [C] part of the head shavedin this way （僧侣的）头顶剃光的部.
牛津英汉双解词典