Scottish National Dictionary (1700–)
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First published 1965 (SND Vol. VI).
This entry has not been updated since then but may contain minor corrections and revisions.
LEE, n.4 Sc. form of Eng. lye, vegetable ash treated and used as a detergent, as in bleaching (Gall. 1824 MacTaggart Gallov. Encycl. 313). Also in Eng. dial. Comb. lee-ash, potash (Rxb. a.1838 Jam. MSS. XII. 134).
[O.Sc. ley, lie, id., 1609, O.E. lēaȝ-, stem of lēah, lye.]

