Meaning of “meantime” - Learner’s Dictionary

meantime

noun uk us /ˈmiːnˌtaɪm/
in the meantime

B2 in the time between two things happening, or while something else is happening:

Your computer won't be arriving till Friday. In the meantime, you can use Julie's.

(Definition of “meantime” from the Cambridge Learner’s Dictionary © Cambridge University Press)