zipper

plural zippers

1. AustraliaUSA zip fastener.

   He got his T-shirt stuck in the zipper of his jacket.

2. A pressure-sensitive plastic closure, as on a Ziploc bag.
3. biochemistryA leucine zipper.
4. slangA scar on a person's body.

   I also competed in track and field at Idaho, and it's all because of putting the shot that I've got my long scar, my zipper, down the back of my neck.

   1969, Jerry Kramer, Farewell to football, page 111

   1 more example

   Making the transition from high school to college teams, for instance, he could not believe the scars his new players were sporting. "So many athletes had zippers down the side of their knee, or knees; they thought nothing of it and called this or that a Band-Aid operation. […]

   1979, Don Atyeo, Blood & guts, violence in sports, page 227

5. USdatedslanggovernmentAn air patrol carried out at dawn or dusk.

   They would handle all the night combat air patrols, the night hecklers who would go over the enemy airfields, and we formed a new little gimmick called "zippers" to help close that gap between the time the daylight strikes left the target and darkness.

   1993, E. T. Wooldridge, Carrier Warfare in the Pacific: An Oral History Collection, page 268

   1 more example

   […] the usual gap between the time the last strike of the day departed and the first night hecklers arrived was closed with "zippers" — night fighters who, using day fighter tactics, proceeded to the target in daylight in time to relieve the last day blanket patrol.

   1949, Walter Karig, Battle Report

6. BDSMA string of clothes pegs or clips attached to the body and then quickly pulled off.
7. computingA technique for arbitrarily traversing an aggregate data structure and updating its contents. See zipper (data structure).
8. A zipline.

   Skills acquired include learning the "Flea Hop" and the "Tarzan Swing" as well as "Riding the Zipper" (sliding 400 feet on a cable between two mountain peaks), canoeing in white-water rapids, bushwacking and learning to "rappel" hundreds of feet down sheer rock cliffs on a rope.

   1975 July 28, The Barium Messenger, Barium Springs, NC, page 2, column 3

present singular third person zippers · participle present zippering · participle past zippered · past zippered

1. To close a zipper.

   He zippered his sweater against the cold.

   Synonyms: zipper up, zip up, zip · Antonyms: unzipper, unzip, zipper down, zip down

2. To put a zipper on an article.

   These fall jackets are zippered.

3. To act in a manner similar to a zipper.
   1. To act in a manner similar to a zipper closing; to interleave.

      If more drivers knew how to zipper, the accident would not have disrupted traffic so much.

      Synonyms: zipper up, zip up, zip

   2. To unzipper.

      Synonyms: zipper down, zip down, unzip