finny

comparative finnier · superlative finniest

1. Having one or more fins.

   The silent fisher […] waits the finny prize (Book XII)

   1726, Homer, translated by Alexander Pope, The Odyssey

   1 more example

   The finny trophies he brought back in the form of numerous fat pickerel were ample evidence of his fishermanship.

   1928, RG&E News, volume 16, page 334

2. Resembling a fin.
3. Abounding in fishes.

   1730–1774, Oliver Goldsmith, Introductory to Switzerland Cheerful at morn, he wakes from short repose, Breathes the keen air, and carols as he goes; With patient angle trolls the finny deep, Or drives his venturous ploughshare to the steep;

plural finnies

1. UKslangA five-pound (£5) note; the sum of five pounds.

   I passed a good many in drapers’ shops, also at tailors’ shops. I never tried jewellers, they’re reckoned too good judges. The notes were all finnies, (5l. notes), and a good imitation.

   1851, Henry Mayhew, London Labour and the London Poor, published 1861

   Synonyms: fin, fiver