Definition of yankeeisms:
(n) :
A native or inhabitant of some part of the United States:
(n) :
(chiefly Southern US) A native or inhabitant of the northern United States.
(n) :
(chiefly Commonwealth, sometimes derogatory) A native or inhabitant of the United States in general.
(n) :
(chiefly Northern US) A native or inhabitant of New England.
(n) :
(chiefly French Louisiana) An anglo, someone without French ancestry; a native or inhabitant of the rest of the United States.
(n) :
(baseball) A player for the New York Yankees.