clew down, Nautical. to secure (a sail) in an unfurled position.
11.
clew up, Nautical. to haul (the lower corners of a square-rig sail) up to the yard by means of the clew lines.
Idiom
12.
spread a large clew, Nautical.
a.
to carry a large amount of sail.
b.
to present an impressive appearance.
Origin: before 900; Middle English clewe,Old English cleowen, cliewen, equivalent to cliew- (cognate with Old High German kliu ball) + -en-en5; akin to Dutch kluwen
"ball of thread or yarn," northern Eng. and Scot. relic of O.E. cleowen, probably from W.Gmc. *kleuwin, from P.Gmc. *kliwjo-, from I.E. *gleu- "gather into a mass, conglomerate" (related to clay).