member

noun

• 1a person, country, or organization that has joined a group, society, or team:she’s an active member of Greenpeace [as modifier]:the EU’s member countries
• a person, animal, or plant belonging to a particular group:interest from members of the public
• (Member) a person formally elected to certain legislative bodies:Member of Parliament for Stretford
• used in the title awarded to a person admitted to certain honours:Member of the Order of the British Empire

• 2a constituent piece of a complex structure, especially a component of a load-bearing structure:the main member that joins the front and rear axles
• a part of a sentence, equation, mathematical set, etc..

• 3 archaic a part of the body, especially a limb.
• (also male member) used euphemistically to refer to the penis.