Scottish National Dictionary (1700–)
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First published 1968 (SND Vol. VII).
This entry has not been updated since then but may contain minor corrections and revisions.
POWST, n. The first milk from a cow after calving (Mry. 1949). Cf. Beest(ings). [pʌust]
[Orig. doubtful. Phs. an extended use of Poust, n.1, sc. the strength or pith of the cow.]
