means A field or stretch of grassy land where livestock are put out to graze, or the act of grazing them there.

from From Latin pastura, 'a feeding, grazing,' built on pascere, 'to feed' or 'to lead to pasture' — the same root that fed pastor (a shepherd, literally 'one who feeds') and repast (a meal). It wandered through Old French pasture before settling into English. So the herdsman of sheep and the shepherd of souls share a single Latin meal-time root: both are, at heart, feeders of their flocks.