A small case or wallet designed to hold and organize fishing flies (artificial lures for fly fishing).
From 'fly' (fishing lure) + 'book' (from Germanic roots). Term dates to the development of fly fishing as a sport in 15th-century England.
A flybook is an angler's treasure chest—carefully organized rows of tiny, handmade lures that represent years of knowledge about what trout and salmon will bite.
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