Scottish National Dictionary (1700–)
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First published 1971 (SND Vol. VIII).
This entry has not been updated since then but may contain minor corrections and revisions.
SHILLACRACK, n. A din or clamour; one who makes such a noise (Ork. 1929 Marw.). [′ʃɪləkrak]
[Appar. ad. Norw. dial. skjella, (to make) a din, + Crack.]
