Definitionen
1.AdjectiveBeing four times as long, as big or as many of something."He's quite an athlete and can do quadruple jumps with ease."
2.VerbTo multiply by four."Quadrupling four gives sixteen."
3.VerbTo increase by a factor of four."Our profits quadrupled when we made the improvements."
4.VerbTo provide four parallel running lines on a given stretch of railway.
5.NounSomething that is four times the usual number, amount, size, etc.
6.NounA figure-skating jump with four revolutions in the air.