There are many bands with the name Vomit.
1) Vomit was a Norwegian Death Metal band, formed in 1985.
http://www.metal-archives.com/band.php?id=30736
2) Vomit is a thrash/hardcore band from Arroyo Grande, California. Band members include: Steve Dave, Max Triplett, Nick Vicars, and Garland Miller.
www.myspace.com/vomithardcore
3) Vomit is a Belgian Melodic Death Metal band.
http://www.vomit.be / www.myspace.com/vomit
4) Vomit is a Drone/Noise band from UK originally a 2 man band but the old member is not to be discussed, now just a one man band. Vomit were signed to Black Ritual Records. Have now disbanded in 2007.
http://metal-archives.com/band.php?id=80527

5) Vomit is Japanese group ｖｏＭｉｔ
Vomit is also the name of various other Death metal bands or Thrash bands that have released one or two demos