1. One of four children born at the same time.
2. (Crystallog.)
Defn: A compound or twin crystal consisting of four individuals.
FOURNEAU
Four`neau", n. Etym: [F.] (Mil.)
Defn: The chamber of a mine in which the powder is placed.
FOUR-O'CLOCK
Four"-o'clock`, n.
1. (Bot.)
Defn: A plant of the genus Mirabilis. There are about half a dozen species, natives of the warmer parts of America. The common four- o'clock is M. Jalapa. Its flowers are white, yellow, and red, and open toward sunset, or earlier in cloudy weather; hence the name. It is also called marvel of Peru, and afternoon lady.
2. (Zoöl.)
Defn: The friar bird; — so called from its cry, which resembles these words.