shuttle
1. shut.tle \'sh*t-*l\ n [ME shittle, prob. fr. OE scytel bar, bolt; akin
to ON skutill often attrib X bolt, OE sce-otan to shoot - more at SHOOT 1a:
a device used in weaving for passing or shooting the thread of the woof
between the threads of the warp 1b: a spindle-shaped device holding the
thread in tatting, knotting, or net ting 1c: any of various sliding thread
holders for the lower thread of a sewing machine that carry the lower
thread through a loop of the upper thread to make a stitch 2a: a going back
and forth regularly over a specified and often short route by a vehicle
2b: an established route used in a shuttle; also : a vehicle used i n a
shuttle
2. shuttle \'sh*t-lin, -*l-in\ vb or shut.tling 1: to move or travel back
and forth frequently 2: to move by or as if by a shuttle