Number of warp yarns per inch in a fabric. Or what you do to your opponents.

To thread the warp through the rigid heddle.

The frame, which hangs in front of the shafts on the loom, supports the reed through which the warp ends are threaded in order. The slay is pushed back and forth during he process of weaving, to press the yarn firmly into the fell of the cloth. Sometime referred to as the beater, batten, lay, lathe, going-part or fly-beam. See batten.

verb used to describe the process of pulling the warp threads through the reed.