blood brotherˌblood ˈbrother noun [countable] 
a man who promises loyalty to another, often in a ceremony in which the men’s blood is mixed together
a man who promises loyalty to another, often in a ceremony in which the men’s blood is mixed together- ulceration
- ulcerous
- Ullswater
- ulna
- Ulster
- Ulster Defence Association
- Ulster Defence Regiment
- Ulster Democratic Unionist Party
- Ulster Unionists
- Ulster Volunteer Force
- ulterior
- ultimate
- ultimate fighting
- ultimately
- ultimatum
- ultra-
- Ultrabook
- ultramarine
- ultraportable
- ultrasonic
- ultrasound
- ultraviolet
- ululate
- ululation
- Uluru