What does "separator" mean?

Separator: One who, or that which, separates. Specifically: (a) (Steam Boilers) A device for depriving steam of particles of water mixed with it. (b) (Mining) An apparatus for sorting pulverized ores into grades, or separating them from gangue. (c) (Weaving) An instrument used for spreading apart the threads of the warp in the loom, etc.