[英][?fɑ:sn?][美][?f?sn?]
n.
（尤指衣服的）扣處，扣法;
v.
（使兩物）系牢( fasten的現在分詞 ); 系緊; 使牢固; （使）關緊;
復數：fastenings
柯林斯詞典
1
N-COUNT緊固件;扣件A fastening is something such as a clasp or zip that you use to fasten something and keep it shut.語法信息
The sundress has a neat back zip fastening.
這件背心裙背部有壹個巧妙的拉鏈。