Agist \A*gist"\, v. t. [OF. agister; [`a] (L. ad) + gister to assign a lodging, fr. giste lodging, abode, F. g[^i]te, LL. gistum, gista, fr. L. jacitum, p. p. of jac?re to lie: cf. LL. agistare, adgistare. See {Gist}.] (Law) To take to graze or pasture, at a certain sum; -- used originally of the feeding of cattle in the king's forests, and collecting the money for the same. --Blackstone.