1. A very well-known public figure 
2. A brand name that is well known to the great majority of households

Derived forms: household names

• organic law
• organic light-emitting diode
• organic phenomenon
• organic process
• organic structure
• organically
• organicism
• organicistic
• organification
• organisable
• organisation
• organisation chart
• Organisation for the Prohibition of Chemical Weapons
• Organisation of Petroleum-Exporting Countries
• Organisation of the Oppressed on Earth
• organisational
• organisational chart
• organise
• organised
• organised crime
• organised labour
• organised religion
• organiser
• organism
• organismal