The Collaborative International Dictionary of English v.0.48:

Regurgitation \Re*gur`gi*ta"tion\ (-t?"sh?n), n. [Cf. F.
   r['e]gurgitation.]
   1. The act of flowing or pouring back by the orifice of
      entrance; specifically (Med.), the reversal of the natural
      direction in which the current or contents flow through a
      tube or cavity of the body. --Quain.
      [1913 Webster]

   2. The act of swallowing again; reabsorption.
      [1913 Webster]

WordNet (r) 3.0 (2006):

regurgitation
    n 1: backflow of blood through a defective heart valve
    2: recall after rote memorization; "he complained that school
       was just memorization and regurgitation"
    3: the reflex act of ejecting the contents of the stomach
       through the mouth [syn: vomit, vomiting, emesis,
       regurgitation, disgorgement, puking]