buck
n. countable C1 Advanced Oxford US //ˈbək// UK //bˈʌk// buck
n. an informal word for a dollar, especially in American English. You might hear someone say something costs 'ten bucks'.
n. an informal term for a unit of currency, most frequently the United States dollar. Its usage is common in North American and Australian English.
This coffee costs five bucks.
He only had a few bucks in his pocket, not enough for the train ticket home.
The entrepreneur's first venture was funded with a thousand bucks borrowed from family, a humble start for what would become a global tech empire.