Look up: weaken

1. weaken
   [v] - lessen the strength of 2. [v] - become weaker
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. weaken
   to reduce the clay content of a sand by adding silica sand or lean sand Category: Iron and steel industries
   Found on http://www.mijnwoordenboek.nl/definition
   
   
3. Weaken
   Weak'en transitive verb [ imperfect & past participle Weakened ; present participle & verbal noun Weakening .] 1. To make weak; to lessen the strength of; to deprive of strength; to...
   Found on http://www.encyclo.co.uk/webster/W/18
   
   
4. Weaken
   Weak'en intransitive verb To become weak or weaker; to lose strength, spirit, or determination; to become less positive or resolute; as, the patient weakened ; the witness weakened on cross-examination. 'His notion weakens , his discernings are lethargied.' Shak.
   Found on http://www.encyclo.co.uk/webster/W/18
   
   
5. Weaken
   • (v. i.) To become weak or weaker; to lose strength, spirit, or determination; to become less positive or resolute; as, the patient weakened; the witness weakened on cross-examination. • (v. t.) To make weak; to lessen the strength of; to deprive of strength; to debilitate; to enfeeble; t...
   Found on http://thinkexist.com/dictionary/meaning