'exerciser' definitions:

Definition of 'exerciser'

From: WordNet
noun
Sports equipment used in gymnastic exercises [syn: gymnastic apparatus, exerciser]

Definition of 'exerciser'

From: GCIDE
  • exerciser \ex"er*ci`ser\, n.
  • 1. One who exercises. [1913 Webster]
  • 2. one who supervises the exercise of animals, such as horses or dogs. [PJC]
  • 3. a device used for exercising muscles; as, a thigh exerciser. [PJC]