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.
ROARER, n. Anything large of its kind (Cld. 1880 Jam.).
[Agent. n. from roar. Cf. Roarie below and U.S. slang roarer, something superlatively good.]
