river · noun C /ˈrɪv.ər/
river
A1 a long, natural area of water that flows across land and into the ocean, a lake, another river, etc.
Dictionary examples:
the River Thames
Two major rivers flow through the town.
We sailed slowly down/up the river.
Learner example:
I like to walk by [the] river Exe. (Skills for Life (Entry 1); A1; Slovak)
mouth of a river
C1 where a river goes into the sea
Dictionary example:
It is a small village, by the mouth of a river.
Learner example:
The mouth of the river with a [narrow] exit to the sea, provided an extra ex[c]itement because of the pressure of the water when joining the sea. (Certificate of Proficiency in English; C2; Portuguese)
