Aguo
Wash is a four letter word meaning "to clean with water".
tide
swim?
A four letter word starting with the letter a is able.
ewer
Wash is a four letter word meaning "to clean with water".
Wash is a four letter word meaning "to clean with water".
scum
best
fish
Flow or tide
Sink
swim?
tide
Wash.
One possibility is the word pipe. For example, water flows threw pipes.
Lake