Scottish National Dictionary (1700–)
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First published 1960 (SND Vol. V).
This entry has not been updated since then but may contain minor corrections and revisions.
JAW-LOCK, n., v.
I. n. Lock-jaw (Ork., Cai., m.Lth., Lnk. 1959).Ayr. 1887 J. Service Dr Duguid 115:
He dee'd of jaw-lock in a week.
II. v. To render tongue-tied or speechless (m.Lth. 1959).Lnk. 1902 A. Wardrop Hamely Sk. 84:
The like o' you . . . wad jaw-lock the very Germans.