Definition of communists:
(adj) :
Of, relating to, supporting, or advocating communism.
(n) :
(communism) An advocate of a society based on the common ownership of property; a proponent of communism.
(n) :
(nonstandard) Any revolutionary or subversive radical.
(n) :
A member of a formally constituted Communist Party.
(n) :
A proponent of the kind of communism formally espoused by such a party, typically either Marxism, or more commonly, Leninism or Maoism.
(adj) :
Of or relating to a formally constituted Communist Party.