The Collaborative International Dictionary of English v.0.48:

Lhasa \Lhasa\ n.
   The capital city of Tibet; it is the sacred city of Lamaism.

   Syn: Lassa, Lasa, capital of Tibet.
        [WordNet 1.5]

   2. A breed of terrier having a long heavy coat raised in
      Tibet as watchdogs; also called Lhasa apso.

   Syn: Lhasa apso.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Lhasa
    n 1: the sacred city of Lamaism; known as the Forbidden City for
         its former inaccessibility and hostility to strangers [syn:
         Lhasa, Lassa, capital of Tibet, Forbidden City]
    2: a breed of terrier having a long heavy coat raised in Tibet
       as watchdogs [syn: Lhasa, Lhasa apso]