picket line

/หˆpษชkษชt laษชn/

IPA: /P IH1 K AH0 T L AY1 N/

noun
  1. 1

    A line or rope held by one or many pickets, chiefly one used for tethering horses.

  2. 2

    A barrier or fortification formed by pickets; a stockade.

  3. 3

    A boundary guarded by a picket (unit of soldiers).

  4. 4

    A boundary created by workers participating in a strike, generally at the workplace entrance, which other workers are asked not to pass.

Source: https://en.wiktionary.org/wiki/picket%20line