emphasis If you describe an event as a bloodbath, you are emphasizing that a lot of people were killed very violently. The war degenerated into a bloodbath of tribal killings. the violent killing of many people at one time = massacre
[ 'bl&d-"bath, -"b[a']th ] (noun.) 1867. Coined in 1867. Compound of blood and bath, the latter used to refer in the metaphorical sense to a deluge of a thing.