procestrium

procestrium [CL as pl. only] , (in gl., understood as): a  sort of raised platform. b place outside a town. c low point of a wall or steps by which it may be ascended. a a scafalde ‥, ~ium CathA.  b pluraliter ~ia ‥ per compositionem i. loca extra civitatem Osb. Glouc. Deriv. 112.  c secundum alios vero ~ia dicuntur loca degradata per que murus ascenditur Osb. Glouc. Deriv. 112.