What does flatiron mean?
A flatiron is a heavy, flat piece of iron with a handle, heated on a stove or in a fire and used to press wrinkles from clothing — the standard laundry tool of households before the arrival of electric irons in the early twentieth century. The word carries strong period connotations, evoking washday rituals of the nineteenth century, and it survives today mainly in historical writing, antiques collecting, and heritage settings. Remarkably, the term also left its mark on architecture: because a flatiron viewed from the side resembles a tall wedge, triangular buildings came to be called 'flatirons', the most celebrated being New York City's Flatiron Building of 1902, whose name in turn gave the surrounding Flatiron District its identity. The word thus bridges two very different worlds — domestic labor and urban iconography. For readers, 'flatiron' offers a compact lesson in how everyday tools can lend their names to landmarks and even entire neighborhoods.
A heavy, wedge-shaped iron that is heated on a stove or in a fire and used for pressing clothes.
"She set the flatiron on the trivet to cool after finishing the collars."
Now largely historical, since electric steam irons have replaced flatirons.
A structure or object resembling a flatiron in shape, typically a triangular, wedge-like building occupying a street corner or converging streets.
"The city's best-known flatiron rises twenty stories at the junction of two avenues."
Standard plural; used when referring to multiple irons or multiple flatiron-style buildings.
"The museum's laundry exhibit displays a row of flatirons from the 1800s."
The word 'flatiron' literally shaped a skyline: New York's famous wedge-shaped Flatiron Building (1902) took its name from this humble laundry tool.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of flatiron
The word 'flatiron' combines 'flat', from Old Norse 'flatr' meaning level or smooth, with 'iron', from the Old English 'īsen/īren', ultimately of Proto-Germanic origin, describing the metal itself. It emerged in English in the late sixteenth century as household clothes-pressing irons became common items. Its close relative 'sadiron' — possibly from 'sad' in its old sense of 'solid, heavy' — denotes a particular form of the tool. The architectural usage arose by analogy in nineteenth-century America, where wedge-shaped buildings on triangular lots were likened to the laundry implement, a comparison cemented by New York's Flatiron Building.
How flatiron is actually used
As a laundry implement, 'flatiron' is now chiefly historical or nostalgic, appearing in antique contexts and older writing; the modern clothes iron has replaced it. The architectural sense survives actively in references to New York's Flatiron Building and its surrounding Flatiron District.
Easily confused with flatiron
A sadiron is a specific type of solid smoothing iron pointed at both ends, while 'flatiron' is the broader term for any flat-heated clothes iron of that era.