Scottish National Dictionary (1700–)
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First published 1956 (SND Vol. IV).
This entry has not been updated since then but may contain minor corrections and revisions.
†GAE, n.2 Mining: a seam of igneous rock, “a trouble, slip, or dyke” (Sc. 1886 J. Barrowman Mining Terms 30).
[O.Sc. has gae, a dyke in a coal-seam, 1672. Of uncertain origin, but phs. from Gae, v.]