WordReference Random House Unabridged Dictionary of American English © 2026
reef′ knot′, [Naut.]
  1. Nautical, Naval Termsa square knot used in reefing sails. Also called flat knot. 
  • 1835–45

Collins Concise English Dictionary © HarperCollins Publishers::
reef knot n
  1. a knot consisting of two overhand knots turned opposite waysAlso called: square knot
'reef knot' also found in these entries (note: many are not synonyms or translations):
granny knot - square knot - flat knot - surgeon's knot

Forum discussions with the word(s) "reef knot" in the title:


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