'Energizer' definitions:

Definition of 'energizer'

From: WordNet
noun
Someone who imparts energy and vitality and spirit to other people [syn: energizer, energiser, vitalizer, vitaliser, animator]
noun
A device that supplies electrical energy [syn: energizer, energiser]

Definition of 'Energizer'

From: GCIDE
  • Energizer \En"er*gi`zer\, n. One who, or that which, gives energy, or acts in producing an effect. [1913 Webster]