2. Adjective. (idiomatic) Working at one's job; occupied in some manner during one's hours of remunerated employment. ¹
3. Adjective. (idiomatic) Of a taxicab, engaged for hire; displayed numerically as time or fare on the meter of a taxicab. ¹
4. Adjective. (sports) In the official time remaining in a game or other sporting event. ¹
5. Adjective. (sports) In the official time expired in a game or other sporting event. ¹
6. Adjective. (context: of a motor vehicle) Displayed numerically on the mileage or kilometric gauge. ¹
7. Adjective. Remunerated per unit of time. ¹
8. Adverb. (idiomatic) During one's official working hours; in or into a position of remunerated employment. ¹
¹ Source: wiktionary.com