[1] : The Collaborative International Dictionary of English v.0.48

baptist \bap"tist\ ba^p"ti^st, n. l. baptista, gr.
   baptisth`s.
   1913 webster
   1. one who administers baptism; -- specifically applied to
      john, the forerunner of christ. --milton.
      1913 webster

   2. one of a denomination of christians who deny the validity
      of infant baptism and of sprinkling, and maintain that
      baptism should be administered to believers alone, and
      should be by immersion. see anabaptist.
      1913 webster

   note: in doctrine the baptists of this country the united
         states are calvinistic, but with much freedom and
         moderation. --amer. cyc.
         1913 webster

   freewill baptists, a sect of baptists who are arminian in
      doctrine, and practice open communion.

   seventh-day baptists, a sect of baptists who keep the
      seventh day of the week, or saturday, as the sabbath. see
      sabbatarian. the dunkers and campbellites are also
      baptists.
      1913 webster baptistery
see also:
anabaptist freewill baptists seventh-day baptists sabbatarian 

[2] : WordNet (r) 2.0

baptist
     adj : of or pertaining to or characteristic of the baptist church;
           "baptist baptismal practices"; "a baptist minister"
           syn: baptistic
     n : follower of baptistic doctrines
see also:
baptistic 

Baptist >> B Words
Baptist, definition of term: Baptist
baptist_pag1.html

Baptist Church >> B Words
Baptist Church, definition of term: Baptist Church
baptist+church_pag1.html