the lower extremity of the leg below the ankle, on which a person stands or walks.
The Antipodes were the body's extremities, its feet or its finger nails.
the lower or lowest part of something standing or perceived as standing vertically; the base or bottom.
the foot of the stairs
a unit of linear measure equal to 12 inches (30.48 cm).
shallow water no more than a foot deep
a group of syllables constituting a metrical unit. In English poetry it consists of stressed and unstressed syllables, while in ancient classical poetry it consists of long and short syllables.
A trochee is a metrical foot of two syllables, the first long and the second short.