English to English

verb (v)

• take hold of or attach to(verb.contact)

  source: wordnet30
• adopt(verb.cognition)

  Synonym:
  fasten on, hook on, seize on, take up
  

  source: wordnet30
• understand, usually after some initial difficulty(verb.cognition)

  Synonym:
  catch on, cotton on, get it, get onto, get wise, tumble, twig
  

  source: wordnet30