Exerciser

Ex'er·ci`ser noun One who exercises.
Found on http://www.encyclo.co.uk/webster/E/85

Exerciser

• (n.) One who exercises.
Found on http://thinkexist.com/dictionary/meaning/exerciser/

Exerciser

Hardware or software that creates a variety of different errors or purposely tries to overload a system for the purposes of testing. Exercisers are often built in to protocol analyzers and many have simple GUIs
Found on http://www.used-line.com/glossaries/glossary.cfm?g_id=16
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