English to English

verb (v)

• serve oneself to, or consume regularly(verb.consumption)

  Synonym:
  consume, have, take, take in
  Antonym:
  abstain, desist, refrain
  

  source: wordnet30
• take up mentally(verb.cognition)

  Synonym:
  absorb, assimilate, take in
  

  source: wordnet30
• To take into, or as into, the stomach or alimentary canal.(verb)

  source: webster1913