A simple iron (for pressing laundry) which is heated on a stove
(especially referring to the shape of a building) a quadrilateral with two parallel sides, one of which is very short, and whose non-parallel sides are longer than either parallel side.
Full definition of flatiron
Adjective
flatiron
Having a flatiron shapea flatiron building
1900, Charles W. Chesnutt, The House Behind the Cedars, Chapter I,The street down which Warwick had come intersected Front Street at a sharp angle in front of the old hotel, forming a sort of flatiron block at the junction, known as Liberty Point
