Definition of green drake in English:

green drake

noun

British
  • 1The green subadult of certain mayflies.

    • ‘About a week after opening day, green drakes - big, pea-colored mayflies - start hatching, allowing anglers to sight-cast to 20-plus-inch rainbow trout.’
    • ‘The natural diet of loch trout is more varied than most care to admit and be prepared for trout taking midge, stonefly, sedge, beetles, nymphs, olives and mayfly (yes green drakes do hatch in profusion north of the Watford gap!).’
    1. 1.1 An artificial fishing fly that imitates a green drake.