plural of quatrain

That descends steeply. / Aimed from higher ground, as fire upon an enemy. / (of the neckline of a dress) Very low-cut.

(mathematics, geology) The use of mathematical techniques to model complex geological systems (such as earthquakes)

(transitive and intransitive, Canada, US) To drive or jaunt about, going from place to place without any specific direction or goal. / (idiomatic) To spend one's time idly.