triple
verb(tri-ple)
increase threefold
triple
noun(tri-ple)
a set of three similar things considered as a unit
triple
noun(tri-ple)
a base hit at which the batter stops safely at third base
Synonyms: three-bagger, three-base hit, 
triple
adjective(tri-ple)
having three units or components or elements
Examples:
Overcrowding made triple sessions necessary. 
Triple time has three beats per measure. 
Triplex windows. 
triple
adjective(tri-ple)
three times as great or many
Examples:
A claim for treble (or triple) damages. 
triple
noun(tri-ple)
a quantity that is three times as great as another
triple
verb(tri-ple)
hit a three-base hit