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.
NIVLOCK, n. A bit of wood round which the end of a hair-tether is fastened for holding by, a toggle (Bnff., Abd. 1825 Jam.).
[Orig. somewhat doubtful, phs. a dim. form from Knewel, q.v., or Nieve.]
