Boynag or Bynack, a burn in Crathie parish, Aberdeenshire, rising among the central Grampians, adjacent to the boundary with Perthshire, and running 5½ miles north-eastward to the Dee, 4½ miles above the Linn of Dee. A shooting lodge is on it, at a point 12 miles WSW of Castleton of Braemar; and a carriage road up to that point gives material aid to the exploration of the intricate mountain region of the Cairngorms, a footpath leading thence down Glen Tilt to Blair Athole.

(F.H. Groome, Ordnance Gazetteer of Scotland (1882-4); © 2004 Gazetteer for Scotland)