a light frame made of long, narrow pieces of wood that cross each other, used to support climbing plants （支撑攀缘植物的）棚，架；攀缘架 
Word Originlate Middle English (denoting any latticed screen): from Old French trelis, from Latin trilix ‘three-ply’, from tri- ‘three’ + licium ‘warp thread’. Current senses date from the early 16th cent.