- a condition in which a foot has a flat or dropped instep arch, with the entire sole meeting the ground
- pl. -·foots· or -·feet·Slang a policeman: so called from the notion that flat feet result from walking a beat
- pl. flat·feet A condition in which the arch of the foot is abnormally flattened down so that the entire sole makes contact with the ground.
- pl. flat·foots a. Informal A person with flat feet.b. Slang A police officer.
intransitive verbflat·foot·ed, flat·foot·ing, flat·foots
To walk in a flat-footed manner: “He flatfooted along, twirling his club” (James T. Farrell).