arm up

arm up

To provide, accumulate, or take up weapons, as in preparation for war or fighting. All citizens must be prepared to arm up in the face of a foreign invasion. The king decided to arm up his soldiers in anticipation of an attack from the neighboring country.
See also: arm, up
Farlex Dictionary of Idioms.
See also:
  • in fighting form
  • in fighting trim
  • gird
  • gird (up) (one's) loins
  • gird loins
  • gird one's loins
  • gird up loins
  • gird your loins
  • raise money for
  • raise money for (someone or something)
References in classic literature
Mary Anne with her face to the window, held her arm up.
Reach right arm up high, inwardly rotating arm so that the palm of the hand faces backward.