Ranter \Rant"er\ (r[a^]nt"[~e]r), n.
1. A noisy talker; a raving declaimer.
[1913 Webster]
2. (Eccl. Hist.)
(a) One of a religious sect which sprung up in 1645; --
called also {Seekers}. See {Seeker}.
(b) One of the Primitive Methodists, who seceded from the
Wesleyan Methodists on the ground of their deficiency
in fervor and zeal; -- so called in contempt.
[1913 Webster]