What is to shake, vibrate, or quiver, either from not being solid, as soft, wet land, or from violent convulsion of any kind; as, the earth quakes; the mountains quake. " Over quaking bogs." Macaulay called?

quake — To shake, vibrate, or quiver, either from not being solid, as soft, wet land, or from violent convulsion of any kind; as, the earth quakes; the mountains quake. " Over quaking bogs." Macaulay. (Webster's 1913.)