Related Clues:
- Parade groups
- Unites for a purpose
- Musical battlers
- Alabama and Kansas, for two
- Rock concert lineup
- Sides in an age-old "battle"
- Sorts, as chicks
- Sides in an unending battle
- Simple rings
- Be ready to burst, maybe
- Female and male
- Long-standing battlers
- Sides in a societal 'battle'
- Swelling initially going blue exploded
- Rounded protrusion