n.
  - land covered mainly with grass, suitable for grazing cattle or sheep.
- grass and herbage growing on such land.
v.
 put (animals) to graze in a pasture.
Phrase
  
    - pastures new
 somewhere offering new opportunities. 
[suggested by ‘Tomorrow to fresh woods and pastures new’ (Milton's Lycidas).]
- put out to pasture
 force to retire.
 
  Etymology
  ME: from OFr., from late L. pastura ‘grazing’, from past-, pascere ‘graze’.