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Arm: 1. Anatomy: A human limb that extends from the shoulder to the wrist, used for lifting, moving, and manipulating objects. 2. Weaponry: A device designed for offensive or defensive combat, such as a firearm (e.g., 'small arms'). 3. Support/Extension: A part that extends from a larger structure, like an 'arm' of a sofa (the part where one rests their arm) or a branch of an organization (e.g., the research arm of a university). Foot: 1. Anatomy: The lower extremity of the leg that is used for standing and walking, consisting of the ankle, heel, arch, and toes. 2. Measurement: A unit of length equal to 12 inches (approximately 30.48 centimeters). 3. Support Base: The part of an object that touches the ground and provides stability, such as the foot of a table or chair.