What is Coolie?

Legal Definition
Coolie (alternatively spelled cooli, cooly, quli, koelie, and other such variations), during the 19th and early 20th century, was a term for an indentured servant indentured to a company, mainly from the Indian subcontinent or South China.

Today, it is used varyingly as a legal, inoffensive word (for example, in India for helpers carrying luggage in railway stations) and also used as a racial slur in Africa for certain people from Asia, particularly in South Africa.
-- Wikipedia