S / scămillus
noun

scămillus

gen. scămilli · gender masculine · decl. 2nd
(acc. to Prisc. p. 615 P., , , ) dim. scamnum
a little bench; stool; unequal projections
a little bench or stool: impares, i. e. unequal projections or steps on the pedestals of columns, Vitr. 3, 4, 5; 5, 9, 4; App. 615 P.