A state of north-eastern India, in the eastern Himalayas between Bhutan and Nepal, on the border with Tibet; capital, Gangtok. After British rule it became an Indian protectorate, becoming a state of India in 1975.
Definition of Sikkim in US English:
Sikkim
proper nounˈsikim
A state of northeastern India, in the eastern Himalayas between Bhutan and Nepal, on the border with Tibet; capital, Gangtok. After British rule it became an Indian protectorate, becoming a state of India in 1975.