1. be dependent on, as for support or maintenance
e.g. elderly parents often depend on their adult children
Synonym: rely on
2. put trust in with confidence
e.g. she is someone you can really rely on when times get rough
you can rely on his discretion
Synonym: depend uponrely onrely upon
3. be contingent on
e.g. The outcomes rides on the results of the election
Your grade will depends on your homework