Pyramis, penu. corr. pyramidis, f. gen. Mart. A greate thing of stone or other matter broade and foure square beneath, vp wardes small and sharpe: a steple.Forma pyramidis.Cic.
Lewis and Short: Latin dictionary
prămis, ĭdis, f., = puramis (prob. Egyptian), a pyramid, Cic. N. D. 2, 18, 47; Prop. 3 1, 55; Mart. Spect. 1, 1; Tac. A. 2, 61; Plin. 36, 12, 16, 75: pyramidas regum miramur, id. 36, 15, 24, 103; Mel. 1, 9; Luc. 9, 155; Tac. A. 2, 61.—II.Transf., a geometrical solid figure, a pyramid, Boëth. Arith. 2, 21 sqq.