StreetWetstone WaySuburbCherrybrookDetailsA whetstone (with an h) is a stone used for sharpening tools.
SourcePatrick, Trevor, G. 1994, Street names of Pennant Hills and Surrounding Suburbs of Beecroft, Cheltenham, Cherrybrook, Thornleigh, Westleigh, and West Pennant Hills, Silicon Quill, Hornsby, p.107Map[1]