Definition of heddle:
(n) :
A component in a loom, being one of a number of similar components, through the eye of each of which a distinct strand of the warp is threaded.
(n) :
One of the sets of parallel doubled threads which, with mounting, compose the harness employed to guide the warp threads to the lathe or batten in a loom.
(v) :
To thread each strand of the warp through the eye of a heddle.