familiarly for learners of American EnglishPowered by COBUILD (fəmɪlyərli)
familiarly known as/familiarly called
If you say that something or someone is familiarly knownas a particular thing or familiarly called a particular thing, you are giving the name that people use informally to refer to it. ⇒ ...Ann Hamilton's father, familiarly known as "Hank."
The LieutenantColonel and Kostas muttered familiarly to each other, as the people in charge, showing they were at ease.Harvey, John COUP D'ETATCrispin touched the young man familiarly on the arm and smiled at him.Adam, Paul A NASTY DOSE OF DEATH