wet fly

plural wet flies

1. fishingA lure for fly fishing designed to be fished beneath the surface of the water.

   […] it was with the wet fly that he really knew happiness, trailing it, subtly, seductively under the surface, tempting the fish on to the hook, feeling their play and reading their mind from the tug and pressure beneath the surface of the water.

   1987, Edward Rutherford, Sarum, New York: Crown Publishers, page 875

1. not comparablefishingUsing such a lure.

   […] he had a spinning rod and a fly rod, but the rivers were too shallow and too swift for spinning, and he preferred to fish wet fly.

   1952, Nevil Shute, chapter 4, in The Far Country, London: Heinemann