grayling

Etymology

From Middle English greylyng, equivalent to gray + -ling.

noun

1. Any freshwater fish of the genus Thymallus or specifically Thymallus thymallus, of the salmon family, having a large dorsal fin.
   “This morning,” he said, “We will fish, Turner. We will cast for trout so that we may catch grayling.” 1922, Michael Arlen, “3/19/2”, in “Piracy”: A Romantic Chronicle of These Days
2. Other similar fish
   1. Thymallus arcticus (Arctic grayling)
   2. Salmo salar (Atlantic salmon)
   3. Prototroctes spp. (Retropinnidae)
      1. Prototroctes maraena (Australian grayling)
      2. Prototroctes oxyrhynchus (New Zealand grayling)
3. A species of butterfly, Hipparchia semele, of the family Nymphalidae.
4. Other butterflies of genus Hipparchia.
5. Cercyonis pegala (common wood-nymph)