tributary
US /ˈtrɪb.jə.ter.i/
UK /ˈtrɪb.jə.ter.i/

1.
affluent, tributaire
a river or stream flowing into a larger river or lake
:
•
The Amazon River has many large tributaries.
Le fleuve Amazone a de nombreux grands affluents.
•
This small stream is a tributary of the main river.
Ce petit ruisseau est un affluent de la rivière principale.
1.
tributaire, vassal
paying tribute to another state or ruler
:
•
The smaller kingdom became tributary to the powerful empire.
Le plus petit royaume devint tributaire du puissant empire.
•
The conquered people were forced to pay tributary taxes.
Les peuples conquis furent contraints de payer des impôts tributaires.