1. first family - Noun
2. First family - Proper noun
The family of the President of the United States.
(by extension) The immediate family of a political chief executive.
first family (plural first families)
(generic) A nuclear family that is or was a First Family, when speaking non-specifically.
Leave the President's family business to him. You will have plenty to do without trying to manage the First Family. They are likely to do fine without your help. Donald Rumsfeld
John F. Kennedy brought style and charisma to the White House and a first family that captivated the country: a handsome, witty president, an elegant first lady, and two adorable young children. Kitty Kelley
What people see the first family do has an effect. And from a slightly different aspect, I think that family living in the White House is going to have a profound effect on many Americans. George Stevens, Jr.
Earlier in the morning, he and Jill Biden sent best wishes to the first family for a swift recovery. Source: Internet
Manning "2000s" in Gilbert (2008), p. 320: "Brian Michael Bendis, Mark Millar, and Adam Kubert reexamined Marvel's first family, creating this alternate version of the Fantastic Four." Source: Internet
If their first family Halloween costume was any indication, fans are surely in for a treat (and no tricks!) for the rest of the Halloween weekend! Source: Internet