pyramis
From LSJ
τὸ ἐγδοχῖον τοῦ ὕδατος καὶ τὰ ἐν τῆι πόλει ὑδραγώγια → the water reservoir and the conduits in the city (or on the acropolis)
Latin > English (Lewis & Short)
pȳrămis: ĭdis, f., = πυραμις (prob. Egyptian),
I 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.