Source : WordNet®

reuse
     v : use again after processing; "We must recycle the cardboard
         boxes" [syn: {recycle}, {reprocess}]

Source : Free On-Line Dictionary of Computing

reuse
     
        Using code developed for one {application program} in another
        application.  Traditionally achieved using program libraries.
        {Object-oriented programming} offers reusability of code via
        its techniques of {inheritance} and {genericity}.  {Class}
        libraries with {intelligent browser}s and {application
        generator}s are under development to help in this process.
        {Polymorphic} {functional language}s also support reusability
        while retaining the benefits of {strong typing}.
     
        See also {DRAGOON}, {National Software Reuse Directory},
        {RLF}.