1. The lower extremity of the vertebrate leg that is in direct contact with the ground in standing or walking.
2. A structure used for locomotion or attachment in an invertebrate animal, such as the muscular organ extending from the ventral side of a mollusk.
3. Something suggestive of a foot in position or function, especially:
   1. The lowest part; the bottom: the foot of a mountain; the foot of a page.
   2. The end opposite the head, top, or front: the foot of a bed; the foot of a parade.
   3. The termination of the leg of a piece of furniture, especially when shaped or modeled.
   4. The part of a sewing machine that holds down and guides the cloth.
   5. Nautical The lower edge of a sail.
   6. Printing The part of a type body that forms the sides of the groove at the base.
   7. Botany The base of the sporophyte in mosses and liverworts.
   8. A manner of moving; a step: walks with a light foot.
   9. Speed or momentum, as in a race: "the only other Democrats who've demonstrated any foot till now" (Michael Kramer).
4. The inferior part or rank: at the foot of the class.
5. The part of a stocking or high-topped boot that encloses the foot.
6. 1. A manner of moving; a step: walks with a light foot.
   2. Speed or momentum, as in a race: "the only other Democrats who've demonstrated any foot till now" (Michael Kramer).
7. (used with a pl. verb) Foot soldiers; infantry.
8. A unit of poetic meter consisting of stressed and unstressed syllables in any of various set combinations. For example, an iambic foot has an unstressed followed by a stressed syllable.
9. Abbr. ft. or ft A unit of length in the U.S. Customary and British Imperial systems equal to 12 inches (0.3048 meter). See Table at measurement.
10. foots Sediment that forms during the refining of oil and other liquids; dregs.

1. To go on foot; walk. Often used with it: When their car broke down, they had to foot it the rest of the way.
2. To dance. Often used with it: "We foot it all the night/weaving olden dances" (William Butler Yeats).
3. Nautical To make headway; sail.

1. To go by foot over, on, or through; tread.
2. To execute the steps of (a dance).
3. To add up (a column of numbers) and write the sum at the bottom; total: footed up the bill.
4. To pay; defray: footed the expense of their children's education.
5. To provide (a stocking, for example) with a foot.

Usage Note: In Standard English, foot and feet have their own rules when they are used in combination with numbers to form expressions for units of measure: a four-foot plank, but not a four feet plank; also correct is a plank four feet long (or, less frequently, four foot long). When foot is combined with numbers greater than one to refer to simple distance, however, only the plural feet is used: a ledge 20 feet (not foot) away. At that speed, a car moves 88 feet (not foot) in a second.

Our Living Language  : Some people in New England and the South use constructions such as three foot and five mile in place of Standard English three feet and five miles in certain contexts. Some speakers extend this practice to measures of time, as in He was gone three year, though this is not as common. Interestingly, such constructions are used only if a specific numeral (other than one) precedes the noun. Thus, She gave me four gallon of cider can be heard in vernacular speech; however, no one would say She gave me gallon of cider for She gave me gallons of cider. This is because the numeral makes apparent the plural meaning that would not be specified if both the numeral and the plural form were omitted. See Notes at comparative, plural, redundancy.