1925, probably an agent noun from zip (v.1). The trademark taken out on the name that year applied to a boot with zippers, not to the "lightning fastener" itself, which was so called by 1927.
双语例句
1. The zipper is red.
这条拉链是红色的.
来自《简明英汉词典》
2. She stood looking at him for an instant, then felt at the zipper of her overalls.
她站着看他一会儿, 便伸手去拉工作服的拉链.
来自英汉文学
3. I can't , " and made a zipper motion across his mouth . "
