I
End part of the leg , consisting of the heel, arch, and toes, on which a person stands.
Its major function is locomotion. The human foot cannot grasp and is adapted for running and striding (a step unique to humans that can cover great distances with minimal energy expenditure). Its arched structure helps it support the body's weight. See also podiatry .
II
In measurement , any of numerous lineal measures (commonly 9.8–13.4 in. [25–34 cm]) based on the length of the human foot.
It is used exclusively in English-speaking countries. In most countries and in all scientific applications, the foot (with its multiples and subdivisions) has been superseded by the metre . In the U.S. the definition of the foot as exactly 30.48 cm took effect in 1959. See also inch ; International System of Units ; yard .
III
[c mediumvioletred] (as used in expressions)
athlete's foot
bird's foot trefoil
foot metrical
Foot Michael
foot and mouth disease
white footed mouse
leaf footed bug