[flat-foo t or for 1, -foo t]
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noun, plural flat·feet for 1, flat·foots for 2, 3.
  1. Pathology.
    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.
  2. Slang. a police officer; cop.
  3. Older Slang. a sailor.

Origin of flatfoot

First recorded in 1865–70; flat1 + foot
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for flatfoot

Historical Examples of flatfoot

British Dictionary definitions for flatfoot


  1. 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
  2. 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

flatfoot in Medicine


n. pl. flat•feet (-fēt′)
  1. 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.