SG Heritage Dictionary

Agistor [Noun] Webster's Dictionary 1828

An officer of the king's forest, who has the care of cattle agisted, and collects the money for the same; hence called gist-taker, which in England is corrupted into guest-taker.

Agistor [Noun] Webster's Dictionary 1913

1. 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.

2. Now, one who agists or takes in cattle to pasture at a certain rate; a pasturer.