1 noun (C) BrE all the people who live together in one house 2 adjective (only before a noun)
1 connected with looking after a house and the people in it; domestic: household goods/products/items: washing powder and other household products | household chores
2 be a household name/word to be very well known: Coca Cola is a household name around the world.

Longman dictionary of contemporary English. 2004.