Amount of money invested in large drinks, ten or more

Wiktionary Word definitions in Wiktionary
n. (context of a number English) composed of two digits, i.e. between 10 and 99.

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ And you had Tiger trying to wrap up an incredible year by reaching double figures in victories. ▪ Before a morose crowd limply reaching double figures battle commenced at three o'clock. ▪ Inflation was often in double figures ...