[ flat-foo t or for 1, -foo t ]
/ ˈflætˌfʊt or for 1, -ˈfʊt /

noun, plural flat·feet for 1, flat·foots for 2, 3.

  1. a condition in which the arch of the foot is flattened so that the entire sole rests upon the ground.
  2. Also flat foot. a foot with such an arch.
Slang. a police officer; cop.
Older Slang. a sailor.

Nearby words

  1. flatboat,
  2. flatbread,
  3. flatcar,
  4. flatette,
  5. flatfish,
  6. flatfooted,
  7. flathead,
  8. flathead catfish,
  9. flatheaded apple tree borer,
  10. flatheaded borer

Origin of flatfoot

First recorded in 1865–70; flat1 + foot

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for flatfoot

British Dictionary definitions for flatfoot


/ (ˈflætˌfʊt) /


Also called: splayfoot a condition in which the entire sole of the foot is able to touch the ground because of flattening of the instep arch
plural -foots or -feet a slang word (usually derogatory) for a policeman
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

Medicine definitions for flatfoot


[ flătfut′ ]

n. pl. flat•feet (-fēt′)

A condition in which the arch of the foot is abnormally flattened down so that the entire sole makes contact with the ground.splayfoot talipes planus

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.