1) Member of a legislative body 2) Representative 
• (n.) A member of an assembly, especially of the lower branch of a state legislature.
As·sem'bly·man (ăs*sĕm'blȳ*m a n) noun ; plural Assemblymen (- m e n). A member of an assembly, especially of the lower branch of a state legislature. 
[n] - someone who is a member of a legislative assembly
noun someone who is a member of a legislative assembly
(sometimes cap.) a member of a legislative assembly, esp. a member of the lower house of the legislature in certain states of the U.S.