What is a half sibling ?

Answer 1

A sibling that only shares 1 parent of yours. 

Answer 2

siblings that don't have the same mother and father

have the same mom but different dad or same dad but different mom

Answer 3

I think it's a sibling that is from one of your parents, but not the other 

Answer 4

Thats when you have a brother from another mother.

Answer 5

a bro or sister that only shares one parent with you.