A bath is a container or tub where people wash themselves, usually filled with water.
You might take a relaxing bath after a long day at work or school - it's a way to unwind and get clean at the same time. A lot of people start their morning routine by having a quick bath before getting dressed for the day, especially if they're feeling a bit tired or sluggish. You can also give your kids a bath when they play outside all day and need to wash off dirt and mud. Some bathrooms have a separate shower area where you can choose between taking a bath or just washing quickly with water from the showerhead.
A tub or pool which is used for bathing: bathtub.
To wash a person or animal in a bath
A room containing a shower and/or bathtub, and (typically but not necessarily) a toilet.
