A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Don Seltzer
Date: 2016 Jun 26, 19:43 -0400
The clew as opposed to the tack can be a bad nightmare if allowed to loosened in any stiff breeze. The earring is the largish grommet on the fly end of a sail at the base of the leech. To thread the earring would be to rig the tensioning line secured to the mast.
Since the clew to earring reference to me suggests the line which runs along a loose footed sail to the tack and is fastened into the clew.