Sin·ha·lese 
(sĭn′hə-lēz, -lēs) also Sing·ha·lese (sĭng′gə-lēz, -lēs)
(sĭn′hə-lēz, -lēs) also Sing·ha·lese (sĭng′gə-lēz, -lēs)n. pl. Sinhalese or Singhalese
1. A member of a people constituting the majority of the population of Sri Lanka.
2. The Indic language of the Sinhalese that is the chief language of Sri Lanka.
adj.
Of or relating to Sri Lanka, the Sinhalese, or their language or culture.
[Sanskrit Siṁhalam, Sri Lanka + -ESE.]