a. [f. as prec. + -LESS.]
1. Without a thread; having no thread; unthreaded.
1822. Blackw. Mag., XII. 711. Threadless, knotless, endless, useless mysteries, tragedies, and dramas.
1866. T. Bruce, Summer Queen, 14. Fancy lost in threadless maze Was running to and fro.
2. Having no screw-thread.
1886. Cyclist, 4 Aug., 1081/1. It [a bicycle] … is made with Clarke’s patent threadless spokes.
