- to make flat.
- to knock down: The boxer flattened his opponent in the second round.
- to become flat.
- flatten in, Nautical. flat1(def 61).
- flatten out, Aeronautics. to fly into a horizontal position, as after a dive.
Origin of flatten
SynonymsSee more synonyms on Thesaurus.com
2. ground, fell, prostrate, deck, floor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for flatten
He uses a spatula to flatten the onions and the meat together, creating a broad circular patty with an uneven edge.The Most American Pit Stop in the U.S.A.
Jane & Michael Stern
July 21, 2014
They are specifically designed to ‘flatten out and mushroom’ when striking human tissue, and are intended to cause maximum damage.Blacking Out the Oscar Pistorius Media Circus
March 11, 2014
In a way, the print emphasizes the pelt-like nature of all images, as they flatten out the world and hand it over to us.Live Bear Is World's Biggest Paintbrush
September 13, 2013
And, when Fajr-5s began making them run for cover they did not began shouting to "flatten all of Gaza.""The Bubble" Bursting
November 21, 2012
Recessions tend to flatten income differentials, but this Great Recession is having the opposite effect.Two Midsummer Fears
July 27, 2012
You could flatten out a piece of iron with your little lady-like arms.L'Assommoir
When they struck the stones they were heard to flatten and fall into the water.
Flatten, and be careful, especially in turning down the corners.The Ladies' Work-Table Book
They tried to flatten it with countless tons of concentration, but it 52 held its shape.'Charge It'
"Now come on, Jean, and see them flatten it out," said Giusippe.The Story of Glass
Sara Ware Bassett
- (sometimes foll by out) to make or become flat or flatter
- (tr) informal
- to knock down or injure; prostrate
- to crush or subduefailure will flatten his self-esteem
- (tr) music to lower the pitch of (a note) by one chromatic semitoneUsual US word: flat
- (intr foll by out) to manoeuvre an aircraft into horizontal flight, esp after a dive
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for flatten
Online Etymology Dictionary, © 2010 Douglas Harper