Crossword clue: a small piece of spun yarn or marline, used to fasten the head of the sail to the spar.
1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
A small piece of spun yarn or marline, used to fasten the head of the sail to the spar. [Written also roband, and robbin