The Collaborative International Dictionary of English v.0.48:
Grazier \Gra"zier\, n. One who pastures cattle, and rears them for market. [1913 Webster] The inhabitants be rather . . . graziers than plowmen. --Stow. [1913 Webster]WordNet (r) 3.0 (2006):
grazier n 1: a rancher who grazes cattle or sheep for market