1.one of the persons who compose a social group (especially individuals who have joined and participates in a group organization);
only members will be admitted
2.an organization that is a member of another organization (especially a state that belongs to a group of nations);
the library was a member of the interlibrary loan association
3.an external body part that projects from the body;
it is important to keep the extremities warm
4.anything that belongs to a set or class;
snakes are members of the class Reptilia
5.the male organ of copulation (`member' is a euphemism)