HYDRAUL'IC HYDRAUL'ICAL, adjective [Latin hydraulicus; Gr. an instrument of music played by water; a pipe.] 1. Relating to the conveyance of water through pipes. 2. Transmitting water through pipes; as a hydraulic engine. Hydraulic lime, a species of lime that hardens in water; used for cementing under water.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI