Pronunciation: (glā'sis, glas'is), [key]
—pl. gla•cisPronunciation: (glā'sēz, -siz, glas'ēz, -iz), [key] gla•cis•es.
1. a gentle slope.
2. Fort.a bank of earth in front of the counterscarp or covered way of a fort, having an easy slope toward the field or open country.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.