Clew

Noun

 * 1)  A roughly spherical mass or body.
 * 2)  A ball of thread or yarn.
 * 3) Yarn or thread as used to guide one's way through a maze or labyrinth; a guide, a clue.
 * 4)  The lower corner(s) of a sail to which a sheet is attached for trimming the sail (adjusting its position relative to the wind); the metal loop or cringle in the corner of the sail, to which the sheet is attached. On a triangular sail, the clew is the trailing corner relative to the wind direction.
 * 5)  The sheets so attached to a sail.
 * 6)  The cords suspending a hammock.
 * 7) Clue.

Verb

 * 1)  to roll into a ball
 * 2)  (transitive and intransitive) to raise the lower corner(s) of (a sail)