verb (v)

• define clearly(verb.cognition)

  Synonym:
  nail down, narrow, narrow down, peg down, specify
  

  source: wordnet30
• place in a confining or embarrassing position(verb.social)

  Synonym:
  trap
  

  source: wordnet30
• attach with or as if with a pin(verb.contact)

  Synonym:
  pin up
  

  source: wordnet30