pasture: the open land where a flock is taken to feed, and the grazing it finds there
This is the ordinary Hebrew word for grazing ground. It is built on the verb for shepherding a flock, so it never means bare land. It means land with something growing on it for animals to eat, and animals being brought there to eat it. Shepherds go out looking for it, settle where they find it, and move on when it fails.
Because the word is tied to feeding, it can point either at the ground or at the food. When a clan searches the hills and finds grazing that is rich and good, the word is plainly a stretch of land. When Jacob's sons tell Pharaoh there is no pasture for their flocks, or a prophet describes cattle milling about in a stripped countryside, the point is that there is nothing left to eat. English keeps a field and its fodder apart; this word does not.
Ezekiel makes the word carry both God's care and its abuse. God promises to feed his flock on good grazing and to settle them in a safe fold (נָוֶה), and then he charges the strong of the flock with eating the best of the grazing and trampling what is left. Since good grazing is exactly what a good shepherd provides, losing it became a standard picture of ruin: a famine that empties Canaan of feed, a proud city left as grazing land for wild donkeys.
Once the word is aimed at predators instead of livestock. Nahum asks where the lions' den has gone, the place where the young lions were fed. The shepherd's word for grazing ground is turned on its head: Nineveh was a pasture, but for lions, and the flock was everyone else.