pediment
ped.i.ment \'ped-*-m*nt\ \.ped-*-'ment-*l\ n [obs. E periment, prob. alter. of E pyramid] : a triangular space forming the gable of a 2-pitched roof in classic arch itecture; also : a similar form used as a decoration - ped.i.men.tal aj
Webster's English Dictionaryped.i.ment \'ped-*-m*nt\ \.ped-*-'ment-*l\ n [obs. E periment, prob. alter. of E pyramid] : a triangular space forming the gable of a 2-pitched roof in classic arch itecture; also : a similar form used as a decoration - ped.i.men.tal aj