Does the word "clin" has other usage than "clin d'oeil" ? Or is it only related to the eye.
There are two homonyms spelled clin.
One is common and only used in the clin d'œil / clin d'yeux expressions. It comes from cligner.
The other one is quite rare and belongs in the ship building and similar vocabulary and means some kind of overlapping tiles. It comes from the Dutch klinken, meaning riveter/boulonner (to rivet/to bolt).