1 time

2 length of time

3 moment

4 period

1 to serve

2 to wait upon

1 when the moment comes

2 at that time

1 to give one's respects

2 to send a greeting

3 (fig.) (coll.) to make offensive reference to (somebody dear to the person to whom one is speaking)

1 to wait for

2 to expect

3 to keep watch

4 to watch over

5 to nurse

1 don't act until the time is ripe (idiom)

1 being late is not acceptable (idiom)