any of several grasses of the genus Phleum,especially P. pratense,native to Eurasia,and P. alpinum,of North America,having a dense cylindrical inflorescence of compressed,one-flowered spikelets and widely cultivated for hay

• 各种梯木草属草本植物的任一种，尤指产于欧亚的梯牧草和产于北美的高山梯牧草，有一个浓密圆锥状花序，紧缩的单花小穗，大量种植用作干草