1Bearing all or part of the weight of something.
- ‘supporting structures for the elevated roads will be brought to site by huge trailers’
2Serving to corroborate something.
- ‘he offered no supporting evidence for this opinion’
3(of an actor or role) important in a play or film but of lesser importance than the leading parts.
- ‘his performance is excellent but he is more than matched by the supporting cast’
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