1) N-COUNT A household is all the people in a family or group who live together in a house.

...growing up in a male-only household...

Many poor households are experiencing real hardship.

2) N-SING: oft N n The household is your home and everything that is connected with looking after it.

My husband gave me cash to manage the household, but none of it was ever my own.

...household chores.

3) ADJ: ADJ n Someone or something that is a household name or word is very well known.

Today, fashion designers are household names...

My agent told me, `This'll make your name a household word.'

4) ADJ: ADJ n Household is used in the names of groups of soldiers who have the job of protecting a king or queen and their family. [BRIT]

...the Household Cavalry Mounted Regiment.

English dictionary. 2008.