A Clew

1. (obsolete) A roughly spherical mass or body.
2. (archaic) 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. (nautical) 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 trailing corner relative to the wind direction.
5. (in the plural) The sheets so attached to a sail.
6. (nautical, in the plural) The cords suspending a hammock.
7. Obsolete spelling of clue