the GNU version of the Collaborative International Dictionary of English
n. One who declaims; an haranguer.
The Century Dictionary and Cyclopedia
n. One who declaims; one who speaks for rhetorical effect or as an exercise in elocution; one who attempts to convince by a harangue.
Word Usage
"Moore, Thomas (1779 – 1852): Irish poet whose performances as a singer and declaimer, not least of his own Irish Melodies (1808 – 34), won him fashionable success in London."