Someone who is more than your friend or family. Someone who could hold a knife to your throat or a gun to your head without causing you the slightest worry. Someone you'd die for and even kill for, but who would do anything in their power to keep you from having to do so.
I was showing Laura one of my swords and without warning swung it at her neck stopping half an inch away, yet she didn't so much as flinch. Laura is my shorm.