What is the meaning of Subaltern?

Of a lower rank or position; inferior or secondary; especially ranking as a junior officer, below the rank of captain.

Asserting only a part of what is asserted in a related proposition.

A subordinate.

A commissioned officer having a rank below that of captain; a lieutenant or second lieutenant.

A subaltern proposition; a proposition implied by a universal proposition.

A member of a group that is socially, politically and geographically outside of the hegemonic power structure of the colony and of the colonial homeland.

subaltern (of a lower rank or position)

subaltern, subordinate

subaltern (of a lower rank or position)

underling, subordinate

Source: wiktionary.org