1
- mass noun vegetation consisting of typically short plants with long narrow leaves, growing wild or cultivated on lawns and pasture, and as a fodder crop草类植物（多为叶子又长又窄的矮小植物, 野生或栽于草坪和牧场, 并可作饲料）。
1.1
- ground covered with grass草地。
1.2
- pasture land牧场：
the farms were mostly given over to grass.
农田大多变为牧场了。
2
- the mainly herbaceous plant that constitutes such vegetation, which has jointed stems and spikes of small wind-pollinated flowers草。
- Grasses belong to the large family Gramineae （or Poaceae; the grass family）, and form the dominant vegetation of many areas of the world. The possession of a growing point that is mainly at ground level makes grasses suitable as the food of many grazing animals, and for use in lawns and playing fields.
3
- mass noun informal cannabis〈非正式〉大麻。
4
- Brit. informal a police informer〈英, 非正式〉向警方告密的人。
- ORIGIN: perhaps related to the 19th-cent. rhyming slang grasshopper 'copper'.
with obj.
1
- （一般作be grassed）cover (an area of ground) with grass使长满草, 在…上种草：
the railtracks were mostly grassed over.
铁轨上多半长满了草。
1.1
- US feed (livestock) with grass〈美〉给（牲畜）喂草。
2
- no obj. Brit. informal inform the police of criminal activity or plans〈英, 非正式〉向警方告发犯罪活动（或计划）：
someone had grassed on the thieves.
有人向警方告发了这些小偷。
3
- catch and bring (a fish) to the riverbank捕（鱼）并带上河岸。
4
- chiefly Rugby & Australian Rules knock (someone) down【主英、澳橄】将（某人）撞倒。
短语
at grass
- grazing放牧, 吃草：
the mare will be out at grass during the day.
白天母马都在外面放牧。
the grass is always greener on the other side of the fence
- proverb other people's lives or situations always seem better than your own〈谚〉这山望着那山高。
not let the grass grow under one's feet
- not delay in acting or taking an opportunity不要行动迟缓; 不要错失良机。
put out to grass
1
- put (an animal) out to graze放牧, 放（动物）吃草。
1.1
- informal force (someone) to retire; make redundant〈非正式〉强迫（某人）退休; 使变得多余。
派生词
grassless
adjectivegrass-like
adjective词源