LepchaPronunciation: /ˈlɛptʃə/Definition of Lepcha noun (plural same or Lepchas) 1a member of a people living mainly in mountain valleys in Sikkim, western Bhutan, and parts of Nepal and West Bengal. 2 [mass noun] the Tibeto-Burman language of the Lepcha, with over 50,000 speakers. adjective relating to the Lepcha or their language. Origin:from Nepali lāpcheLepcha in other Oxford dictionaries Definition of Lepcha in the US English dictionary