triple

adjective

• consisting of or involving three items or people:a triple murder triple somersaults
• having three times the usual size, quality, or strength:a triple dark rum

predeterminer

• three times as much or as many:the copper energy cells had triple the efficiency of silicon cells

noun

• 1a thing that is three times as large as usual or is made up of three standard units or items:two whiskies—triples, please

• 2 (triples) a sporting contest in which each side has three players.

• 3 (triples) Bell-ringing a system of change-ringing using seven bells, with three pairs changing places each time.

• 4 Baseball a hit which enables the batter to reach third base.

verb

• become three times as much or as many:grain prices were expected to triple
• [with object] multiply by three:the party more than tripled its share of the vote