1. 
   overstrain
   [n] - too much strain 2. [v] - strain excessively 3. [v] - overstrain oneself
   Found op http://www.webdictionary.co.uk/definition.php?query=overstrain
   
   
2. 
   Overstrain
   The condition of a structural material which has been stressed past the yield point. Materials can be annealed - given a form of heat treatment - to remove the effects of overstrain.
   Found op http://www.aeroplanemonthly.com/glossary/
   
   
3. 
   Overstrain
   O`ver·strain' intransitive verb [ imperfect & past participle Overstrained ; present participle & verbal noun Overstraining .] To strain one's self to excess. Dryden.
   Found op http://www.encyclo.co.uk/webster/O/57
   
   
4. 
   Overstrain
   O`ver·strain' transitive verb To stretch or strain too much; as to overstrain one's nerves. Ayliffe.
   Found op http://www.encyclo.co.uk/webster/O/57
   
   
5. 
   overstrain
   noun too much strain
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=overstrain
   
   
6. 
   Overstrain
   • (v. i.) To strain one`s self to excess. • (v. t.) To stretch or strain too much; as to overstrain one`s nerves.
   Found op http://thinkexist.com/dictionary/meaning/overstrain/
   
   
7. 
   overstrain
   1) Strain 2) Work too hard
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/overstrain/1
   
   

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