Dictionaries of the Scots Language
Dictionars o the Scots Leid

Scottish National Dictionary (1700–)

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First published 1952 (SND Vol. III). Includes material from the 1976 and 2005 supplements.
This entry has not been updated since then but may contain minor corrections and revisions.

DOUBLING, vbl.n.

1. In pipe music: (1) An ornament prefacing a note, esp. in march, strathspey and reel playing, which has the effect of sounding the note twice in succession, short-long (Sc. 1763 J. Macdonald Compleat Theory Sc. Highl. Bagpipe (1803) 1); (2) the form in which a variation in pibroch may be repeated, usually in a more complete or perfect development according to the principle of the variation.(2) Sc. 1915 J. Grant Piobaireachd 18:
The composer of piobaireachd gets his chanter and prepares the Theme or Urlar, which has been for some time developing in his mind. He transmits it to paper. Then he prepares his First Variation, and its Doubling, the Taorluath and its Doubling, and the Crunluath and its Doubling, which completes his tune.Sc. 1949 Scotsman (2 Sept.):
I think no other instrument could render the doubling of a crunluath, let alone a crunluath a mach.

2. In plumbing: a tilting fillet on a roof over which the edging of sheet lead is doubled to make it watertight (Sc. 1842 Gwilt Encycl. Archit. Gl., 1972 J. Hastings Plumbers' Companion 70). Sc. 1876 W. P. Buchan Plumbing 19:
After the gutter has been laid the "doubling," or long narrow wooden fillet for slates, has then to be put on all along the upper edge. This "doubling," so distinguished because the lead is doubled back over it. . . .