The meaning of a dugout in baseball is that the dugout is the baseball teams bench that is located in foul territory between home plate and either first or third base.
At baseball fields where baseball is played there are usually 2 dugouts which one dugout is for the home baseball team and the other dugout is for the visiting baseball team.
The baseball dugout is the area that is reserved for one team to sit while players wait for their turn at bat.
Each baseball team has its own dugout.
It's called a dugout because dugouts were usually a bit below ground that was dugout and allowed the people watching to see over the dugout.
The dugout is a shelter for the baseball team to sit in.