(1):
(n.) A thundering; thunder.
(2):
(n.) Reciting in a musical prolonged tone; intonating, or singing of the opening phrase of a plain-chant, psalm, or canticle by a single voice, as of a priest. See Intone, v. t.
(3):
(n.) The act of sounding the tones of the musical scale.
(4):
(n.) Singing or playing in good tune or otherwise; as, her intonation was false.