singling noun2 •The reduction of a railway line from double-track to single-track.[…] associated with this project would be the singling of the line from Selby to Shipton Lane, 2½ miles from Market Weighton, and the working of this section on the one-engine-in-steam principle, […] — 1959 •Liquid collected from the wash, or fermented wort; low wine. formssinglings