n. 1. what you spend in jail, a jail sentence
2. a very real thing based on
the movement of matter in the universe.
Units of time are measured in something defined axiomatically such as
the speed of light and a defined length.
1. I'll have sex with a
16 year old even if I get time for it
2. It takes a certain amount of time for a
photon to travel one foot, and under the same
conditions it always takes that amount of time.