Definition of "gremial"

These Friars living in these convents were capable of degrees, and kept their Acts, as other University-men. Yet were they gremials and not gremials, who sometimes would so stand on the tiptoes of their privileges, that they endeavoured to be higher than other students: so that oftentimes they and the scholars could not set their horses in one stable, or rather their books on one shelf.

1840, Thomas Fuller, The History of the University of Cambridge