pinion
verb [ T ] uk/ˈpɪn.jən/ us/ˈpɪn.jən/
抓住，捆住，绑住（尤指双臂）
to hold someone, especially by the arms, to prevent them from moving
He was pinioned to the wall by two men while another one repeatedly punched him. 他被两个男人抓着胳膊摁在墙上，另外一个人不停地挥拳揍他。
pinion
noun [ C ] uk/ˈpɪn.jən/ us/ˈpɪn.jən/
小齿轮
a small wheel with teeth-like parts around its edge that fit against similar parts on a larger wheel or a rack (= bar with teeth-like parts)
a rack-and-pinion assembly 齿轨－齿轮总成