Topiary is the garden art of cutting trees and bushes so they grow into shapes — a bird, a rabbit, a ball, a spiral, a neat green wall. The word covers both things: the art itself ('she studies topiary') and the cut bushes you are looking at ('the garden is full of topiary'). It is normally uncountable, so people say 'some topiary' rather than 'a topiary', though gardeners will sometimes say 'a topiary' for one single piece, and 'topiaries' does turn up in American English. You can also use it before another noun: 'a topiary hedge', 'topiary scissors'. The bushes chosen are the slow, dense, small-leaved kinds like box and yew, because they hold a sharp edge. The feeling of the word is old and grand — big English country houses, palace gardens, Disneyland's cut animals. It is also a slightly bookish word; an ordinary person might just say 'those bushes cut like animals'. Note that topiary is not the same as bonsai: topiary shapes a full-sized plant in the ground, while bonsai keeps a tree tiny in a pot.

綠雕、造型修剪（把樹木灌木剪成動物或幾何形狀的園藝）