Senses
家门/ 家門 house door
The entrance to a house; often used to mean the home itself or one's own residence.
家门/ 家門 family clan
One's family, clan, or household
家门/ 家門 background
One's personal history, life story, or family background, as in the phrase 自报家门 .
家门/ 家門 prologue
The introductory part of a traditional opera, where the plot or characters' backgrounds are explained.
家门/ 家門 family status
A family's social standing, reputation, or pedigree
家门/ 家門 noble family
(of ancient times) the household of a high-ranking official or the nobility