#battery.aggregation  a collection of related things intended for use together: "took a battery of achievement tests"
  supertype:  aggregation__collection__accumulation__assemblage  several things grouped together
  member:  sub-test
  part:  artillery__heavy_weapon__heavyweapon__gun__ordnance  large but transportable armament
     part:  gunstock__stock  the handle of a handgun or the butt end of a rifle or shotgun or part of the support of a machine gun or artillery gun; "the rifle had been fitted with a special stock"

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