The Collaborative International Dictionary of English v.0.48:

Hinayana \Hinayana\ n.
   1. a major school of Buddhism teaching personal salvation
      through one's own efforts.
      [WordNet 1.5]

   2. one of two great schools of Buddhist doctrine emphasizing
      personal salvation through one's own efforts; chiefly in
      Sri Lanka (Ceylon); Myanmar (Burma); Thailand; Cambodia.
      [WordNet 1.5]

WordNet (r) 3.0 (2006):

Hinayana
    n 1: a major school of Buddhism teaching personal salvation
         through one's own efforts
    2: an offensive name for the early conservative Theravada
       Buddhism; it died out in India but survived in Sri Lanka and
       was taken from there to other regions of southwestern Asia
       [syn: Hinayana, Hinayana Buddhism]