Crossword clue: a short line of horsehair, gut, etc., by which a fishhook is attached to a longer line.
1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
Active; brisk; nimble; quick; sharp. [Archaic or Prov. Eng. & Scot.] That horny-handed, snell, peremptory little man. Dr