pollard
/ˈpɔləd; `pɑlɚd/ (also poll) v [Tn esp passive 尤用於被动语态]
cut off the top of (a tree) so that many new thin branches will grow, forming a dense head of leaves 截去（树）的梢（以便长出繁茂的枝叶形成树冠）
The willows need to be pollarded. 这些柳树需截去树梢. pollard, n pollarded tree 截去了梢的树.