from Jack Adams, a proper name
a 1700 - A New Dictionary of the Terms Ancient and Modem of the Canting Crew, B.E.;
"Jack-adams, a Fool"
From: The Second Volume of the Works of Mr. Thomas Brown:
Letters from the Dead to the Living and from the Living to the Dead.
Serious and Comical, in Prose and Verse
From J. Naylor, to his Friends at the Bull and Mouth.