a part of a structure having some specific characteristic or function | the inner surface of the hand from the wrist to the base of the fingers |
the extent of a 2-dimensional surface enclosed within a boundary | the fleshy area of the palm at the base of the thumb |
a part of an animal that has a special function or is supplied by a given artery or nerve | |
a subject of study | |
a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography) | |
a particular environment or walk of life | |