Agister vs. Agistor — What's the Difference?

Alternative form of agistor

One who agists or takes in cattle to pasture at a certain rate; a pasturer.

Formerly, an officer of the king's forest, who had the care of cattle agisted, and collected the money for the same; - hence called gisttaker, which in England is corrupted into guest-taker.

(historical) an officer of the king's forest, who had the care of cattle agisted, and collected the money for the same; hence called gisttaker, which in England is corrupted into guest-taker.