'Economizer' definitions:

Definition of 'economizer'

From: WordNet
noun
A frugal person who limits spending and avoids waste [syn: economizer, economiser]

Definition of 'Economizer'

From: GCIDE
  • Economizer \E*con"o*mi`zer\, n.
  • 1. One who, or that which, economizes. [1913 Webster]
  • 2. Specifically: (Steam Boilers) An arrangement of pipes for heating feed water by waste heat in the gases passing to the chimney. [1913 Webster]