expression, godan verb (-su)
work hard; sweat (from effort)
Figurative use: to exert oneself physically, often in labor or sports, to the point of sweating.
彼は毎日汗を流して働いている。
He works hard every day, sweating.
expression, godan verb (-su)
Literal use: to wash away sweat, typically after exercise or work, often in a shower or bath.
ジムの後でシャワーを浴びて汗を流した。
After the gym, I took a shower and washed off the sweat.