take leave(redirected from take their leave)
1. To depart. In this usage, a personal pronoun is used between "take" and "leave." Unfortunately, it's time for me to take my leave of you lovely people.
2. To take an extended, authorized absence from some thing or place. In this usage, "a" can be used between "take" and "leave." I'll need to take a leave from work when the baby is born.
take (one's) leave (of someone)
to say good-bye to someone and leave. I took leave of the hostess at an early hour. One by one, the guests took their leave.