time: Noun 1. * inevitable passing of events 2. * quantity of availability in time 3. * measurement of a quantity of time 4. * (slang) serving of a prison sentence 5. * time of day, as indicated by clock, etc. 6. * particular moment or hour 7. * measurement under some system of the time of day or moment in time 8. * numerical indication of a particular moment 9. * instance or occurence 10. * experience 11. * era 12. * youth 13. * person's experience or biography Verb 1. * to measure time 2. * to choose how long something lasts