What is the meaning of Clew?

A roughly spherical mass or body.

A ball of thread or yarn.

Yarn or thread as used to guide one's way through a maze or labyrinth; a guide, a clue.

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. The trailing corner relative to the wind direction.

The sheets so attached to a sail.

The cords suspending a hammock.

Obsolete spelling of clue.

to roll into a ball

to raise the lower corner(s) of (a sail)

Alternative form of clewe

Alternative form of clough

Source: wiktionary.org