A base hit at which the batter stops safely at third base.

synonyms: three-bagger, three-base hit.

A set of three similar things considered as a unit.

synonyms: triad, trio, triplet.

Dutch: triool
Polish: trójca, trójka, triada

A quantity that is three times as great as another.

Increase threefold:
— Triple your income!.

synonym: treble.

Roget 93: treble, triple; triplicate, cube.   

Dutch: verdrievoudigen

Hit a three-base hit.

Having three units or components or elements:
— Overcrowding made triple sessions necessary.
— Triple time has three beats per measure.
— Triplex windows.

synonyms: ternary, treble, triplex.

Roget 92: three; triform^†, trinal^†, trinomial; tertiary; ternary; triune; triarch, triadie^†; triple etc. 93.    tri- [Pref.], tris- [Pref.].    ... show more

Roget 93: treble, triple; tern, ternary; triplicate, threefold, trilogistic^†; third; trinal^†, trine.   

Three times as great or many:
— A claim for treble (or triple) damages.

synonyms: three-fold, threefold, treble.