ὕδραυλις

A. hydraulic organ, invented by Ctesibius, Ath. 4.174b, cf. Aristocl.ib.c, Ph. Bel. 77.43 (‐ὴν codd.), Hero Spir. 1.28, Simp. in Ph. 681.7; described by Hero Spir. 1.42:—so τὸ