WordNet sense 1 (the period of time a prisoner is imprisoned):

sentence, prison term

WordNet sense 2 (the fourth coordinate that is required (along with three spatial dimensions) to specify a physical event):

fourth dimension

WordNet sense 3 (the time as given by a clock):

clock time

WordNet sense 4 (an instance or single occasion for some event):

clip

WordNet sense 5 (rhythm as given by division into parts of equal duration):

meter, metre

WordNet sense 6 (measure the time or duration of an event or action or the person who performs an action in a certain period of time):

clock