household name
noun /ˌhaʊshəʊld ˈneɪm/
  /ˌhaʊshəʊld ˈneɪm/
 (also less frequent household word)
- a person, thing or name that has become very well known- She became a household name in the 1960s.
- His name has become a household word since he first appeared in the series.