I. ˈ ̷ ̷| ̷ ̷ transitive verb
Etymology: first name
: to address by the first name
the doctor's son from Edinburgh and the boy from Abilene were soon first-naming each other — T.C.Mendenhall †1924
II. ˈ ̷ ̷ˌ ̷ ̷ adjective
Etymology: first name
: familiar enough to speak and be spoken to by a first name or nickname
on first-name terms with almost everyone — Keith Ellis
on a first-name basis with scores of the neighborhood children — Lamp