QUATRAIN
Quat"rain, n. Etym: [F., fr. quatre four, L. quattuor, quatuor. See
Four.] (Pros.)

Defn: A stanza of four lines rhyming alternately. Dryden.

QUATRE
Qua"tre, n. Etym: [F.]

Defn: A card, die. or domino, having four spots, or pips

QUATREFEUILLE; QUATREFOIL
Qua"tre*feuille, Qua"tre*foil, n. Etym: [F. quatre feuilles.]

Defn: Same as Quarterfoil.

QUATTROCENTO Quat`tro*cen"to, n. & a. [It., four hundred, used as an abbreviated expression for the dates beginning with fourteen hundred.]

Defn: The fifteenth century, when applied to Italian art or literature; as, the sculpture of the quattrocento; quattrocento style. —Quat`tro*cen"tist (#), n.

QUATUOR
Quat"u*or, n. Etym: [F., fr. L. quattuor, quatuor, four. See
Quartet.] (Mus.)

Defn: A quartet; — applied chiefly to instrumental compositions.