Tonsured is the adjective from tonsure. It describes a monk or priest whose hair has been cut in that old church style, with the top of the head shaved bare and a ring of hair left around the sides. You use it in front of a noun almost every time: a tonsured monk, a tonsured head, a tonsured figure kneeling in the corner of the painting. It is a written word, not a spoken one — you will meet it in history writing, in descriptions of old paintings, and in novels set in the Middle Ages, and almost never in conversation. Two small things worth knowing. First, the word can describe either the man or the head itself, and both are normal English. Second, because the tonsure was the visible sign of belonging to the church, calling someone tonsured often does more than describe his hair: it quietly tells the reader he is a churchman. A writer who says 'a tonsured stranger arrived at the gate' has already told you what kind of stranger he is. It is also the past form of the rare verb tonsure, so you may see 'he was tonsured at nineteen', meaning he was given the tonsure and so entered religious life.

剃了髮的、頭頂剃光的（修士）