ziphttp://www.oed.com/dictionary/zip_n4%3Ftab%3Dmeaning_and_usezip, n.⁴
First published 2007

zipnoun4

slang (originally U.S. Military). derogatory and offensive.
  1. 1968–
    A person of East or Southeast Asian birth or descent; spec. a Vietnamese person, esp. a member of the North Vietnamese armed forces during the Vietnam War (1955–75).
    1. 1968
      I'm up there walkin' the ridgeline an' this Zip jumps up smack into me, lays this AK-47 fucking right into me.
      Esquire August 67/2
    2. 1986
      Be advised I've got zips inside the wire.
      D. A. Dye, Platoon (1987) ix. 232
    3. 1992
      They respected their enemy. They never used the derogatory terms I would hear elsewhere: gomers, slopes, dinks, gooks, zips, slopeheads.
      J. F. Flanagan, Vietnam above Treetops ix. 185
    4. 2003
      Zips are crazier than hell.’ ‘Zips?’ ‘Yeah, you know. Dinks. Koreans.’
      J. W. Sammon, Freedom Pagoda ix. 76

zip, n.⁴ was first published in March 2007.

zip, n.⁴ was last modified in December 2023.