The most widely accepted theory is that it is a combination of two Limbu words: su, which means "new", and khyim, which means "palace" or "house". The name is believed to be a reference to the palace built by the state's first ruler, Phuntsog Namgyal. Compare Sikkimese སུ་ཁྱིམ (su khyim).
- State in eastern India which has Gangtok as its capital.
- (historical) A country in Asia that existed until 1975. Official name: Kingdom of Sikkim.
- (states of India) state of India; Andhra Pradesh, Arunachal Pradesh, Assam, Bihar, Chhattisgarh, Goa, Gujarat, Haryana, Himachal Pradesh, Jammu and Kashmir, Jharkhand, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Odisha, Punjab, Rajasthan, Sikkim, Tamil Nadu, Telangana, Tripura, Uttar Pradesh, Uttarakhand, West Bengal