tonsure
US /ˈtɑːn.ʃɚ/
UK /ˈtɑːn.ʃɚ/

1.
剃发, 僧侣剃发
a part of a monk's or priest's head left bare on top by shaving off the hair
:
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The monk's tonsure was a symbol of his devotion.
僧侣的剃发是其虔诚的象征。
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He received the tonsure as a sign of entering the monastic life.
他接受了剃发,作为进入修道生活的标志。