member

(noun) one of the persons who compose a social group (especially individuals who have joined and participate in a group organization). Synonyms: fellow member. Examples: "Only members will be admitted." "A member of the faculty." "She was introduced to all the members of his family."

(noun) anything that belongs to a set or class. Examples: "Snakes are members of the class reptilia." "Members of the opposite sex."

(noun) an external body part that projects from the body. Synonyms: extremity, appendage. Example: "It is important to keep the extremities warm."

(noun) an organization that is a member of another organization (especially a state that belongs to a group of nations). Examples: "The library was a member of the interlibrary loan association." "Canada is a member of the united nations."

(noun) the male organ of copulation (`member' is a euphemism). Synonyms: penis, phallus.