half brother:
(plural: ‘half brothers‘; female: ‘half sister’; for the right pronunciation of ‘half-brother’, please click here)
a brother blood-related through one parent only, i.e. when the father of a person marries another woman or the mother marries another man, a son born to the new mother and the person’s own father or the new father and the person’s own mother becomes the person’s half brother,

Watban Ibrahim Hasan al-Tikriti, one of the Late Saddam Hussein’s half brothers, Iraq
Sheik Ahmed the famous half-brother of Osama bin Laden is of the opinion that Osama could not have been behind the 9/11 attack on World Trade Centre in New York because he (Osama) was a very god-fearing and soft-hearted person.
Though most people don’t mind the difference between a half-brother and a step-brother, there is a lot of difference and, in some societies, there are separate social laws that govern their relationships.
There have been several instances where celebrities have hard time covering for the misdeeds of their half-brothers, misdeeds such as pub brawls, sex scandals, drug abuse or smuggling and even murders!
In most religions, though they are blood-related, half-brothers and their children have no right to the property of any rich person who passes away without having any children of his/her own.

