Neckerchief
A neckerchief, neckie, necko, necker, kerchief or scarf is a type of neckwear associated with Scouts, cowboys and sailors. It consists of a triangular piece of cloth or a rectangular piece folded into a triangle. The long edge is rolled towards the point, leaving a portion unrolled. The neckerchief is then fastened around the neck with the ends either tied or clasped with a slide or woggle.
Wearing of neckerchiefs
Neckerchiefs worn by sailors are shaped like a square, and are folded in half diagonally before rolling, with rolling occurring from the tip of the resulting triangle to its hypotenuse. Either neckerchief is then placed on the wearer's back, under or over the shirt collar with the ends at the front of the wearer. The rolled ends then pass around the neck until they meet in front of it, where they are secured together, either with a knot, such as a reef knot or a slip knot, or with a rubber band or other fastener (called a woggle or neckerchief slide) and allowed to hang. A slip knot (vs. a simple reef or square knot) will give way if the neckerchief gets caught and is thus less likely to choke the wearer.