Making up for deficiencies; supplementary.
A supplement.
A source of supply.
subordinate; inferior
Related to the paying of tribute.
Yielding supplies of any kind; serving to form or make up, a greater object of the same kind, as a part, branch, etc.; contributing.
A nation, state, or other entity that pays tribute.
A natural water stream that flows into a larger river or other body of water.
A vein which drains into a another vein.