adj. & n.
adj. concerned with or formed by clipping shrubs, trees, etc. into ornamental shapes.
n. (pl. -ies) 1 topiary art. 2 an example of this. topiarian adj. topiarist n.
[ F topiaire f. L topiarius landscape-gardener f. topia opera fancy gardening f. Gk topia pl. dimin. of topos place ]