0 a small piece of metal or plastic used to fasten clothes, with two usually round parts, one of which is pushed into the other -- 摁扣，子母扣
Most are fastened with a zip although some may use snap fasteners.
The ordinary button has a button hole, whereas the snap fastener has not.
The use of a zipper closure in place of buttons or snap fasteners also further retains warmth by eliminating drafts.
The two-flap closure is secured by means of metal snap fasteners.
Snap fasteners are often used in children's clothing, as they are relatively easy for children to use.
Three pockets on the outside, with strap and buckle adjustable closures and with snap fasteners for quick access, are provided for miscellaneous items.
A common point of failure is the snap fastener used to attach the lead to the halter.
Anyhow, it is of equal importance to a great number of work-people that the snap fastener should as nearly as possible get into the same category as the button.
