The Collaborative International Dictionary of English v.0.48:
Chant \Chant\, n. [F. chant, fr. L. cantus singing, song, fr.
canere to sing. See Chant, v. t.]
1. Song; melody.
2. (Mus.) A short and simple melody, divided into two parts
by double bars, to which unmetrical psalms, etc., are sung
or recited. It is the most ancient form of choral music.
3. A psalm, etc., arranged for chanting.
4. Twang; manner of speaking; a canting tone. [R.]
His strange face, his strange chant. --Macaulay.
Ambrosian chant, See under Ambrosian.
Chant royal [F.], in old French poetry, a poem containing
five strophes of eleven lines each, and a concluding
stanza. -- each of these six parts ending with a common
Gregorian chant. See under Gregorian.