1) (of events) to happen at the same time; occupy the same period of time (coincide)

2) originating, existing, happening, during the same period of time (contemporaneous)

3) (a beginning of) a period of time in history, life etc marked by special events or characteristics (epoch)

4) a serious quarrel between two people, families or groups over a long period of time (feud)

5) a twenty-fourth part of a day; 60 minutes; a point or period of time (hour)

6) any one of the parts in which something is presented over a period of time; any one of the parts of a payment spread over a period of time (installment)

7) temporary (while more information is prepared, more supplies are obtained etc); during the period of time in-between (interim)

8) a period of time between acts of a play, parts of a concert etc (interval)

9) something to be learnt or taught; period of time given to learning or teaching (lesson)

10) a very brief period of time (moment)