verb (v)

• become more focus on an area of activity or field of study(verb.change)

  Example:
  She specializes in Near Eastern history.
  

  Synonym:
  narrow, narrow down, specialise
  Antonym:
  branch out, broaden, diversify
  

  source: wordnet30
• be specific about(verb.communication)

  Synonym:
  particularise, particularize, specialise, specify
  Antonym:
  generalise, generalize
  

  source: wordnet30
• suit to a special purpose(verb.change)

  Example:
  Specialize one's research.
  This kind of beak has become specialized in certain Galapagos finches.
  

  Synonym:
  specialise
  

  source: wordnet30
• devote oneself to a special area of work(verb.social)

  Example:
  She specializes in honey bees.
  This baker specializes in French bread.
  

  source: wordnet30
• evolve so as to lead to a new species or develop in a way most suited to the environment(verb.change)

  Synonym:
  differentiate, specialise, speciate
  

  source: wordnet30
• To mention specially; to particularize.(verb)

  source: webster1913