Definition of “although” - Learner’s Dictionary

although

conjunction uk us /ɔːlˈðəʊ/
DESPITE

B1 despite the fact that:

She walked home by herself, although she knew it was dangerous.
BUT

B1 but:

He's coming this evening, although I don't know exactly when.

(Definition of “although” from the Cambridge Learner's Dictionary © Cambridge University Press)