Dictionary 1. (n.) One who, or that which, economizes.2. (n.) Specifically: (Steam Boilers) An arrangement of pipes for heating feed water by waste heat in the gases passing to the chimney. Thesaurus Audubon Society National Wildlife Service Sierra Club conservationist conservator deliverer economist economizer forest ranger game warden keeper lifesaver preservationist preserver ranger rescuer safekeeper savior taxidermist |