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.
MOOTHO, n. “A hollow or pit in sandy links” (Ork. 1929 Marw.). [′muθo]
[? Ad. Mouth or O.N. múðr, a mouth, gap, opening, with Ork. -O ending.]
