Meaning of “lean on sb/sth” - Learner’s Dictionary

lean on sb/sth

phrasal verb with lean us uk /liːn/ verb past tense and past participle leaned, also UK leant /lent/

to use someone or something to help you, especially in a difficult situation:

Her mother had always leaned on her for support.

(Definition of “lean on sb/sth” from the Cambridge Learner’s Dictionary © Cambridge University Press)