call on

1.
USUKneutralformal
- To visit someone socially or pay a short formal visit.
2.
USUKneutral
- To ask someone to speak, answer, or perform in a public or instructional setting; to invite someone to contribute.
3.
globalformalliterary
- To appeal to or invoke a higher power or authority for assistance or support.
4.
USUKinformal
- To rely on someone for help or support; to make use of someone's aid or resources.
5.
USUKformalbusinesslegal
- To have the right of first refusal or priority claim to something (as in 'first call on' a resource or person).

Examples: