clocker
/ˈklɒkə(r)/noun
1
- Brit. informal a person who illegally winds back the milometer of a car〈英, 非正式〉非法回拨轿车里程表者。
2
- US informal a drug dealer, especially one who sells cocaine or crack〈美, 非正式〉毒贩（尤指可卡因或强力古柯碱贩卖者）。