n.coarse annual grass having fingerlike spikes of flowers; native to Old World tropics; a naturalized weed elsewhere
同义词：yardgrasswire grassgoose grassEleusine indica
英汉双解大词典
yard grass
1.
N（名词）
an Old World perennial grass, Eleusine indica, with prostrate leaves, growing as a troublesome weed on open ground, yards, etc 蟋蟀草 (Also called wire grass)