Definition of approver in US English:

approver

noun

  • 1A person who endorses or gives permission for something.

    ‘the leading approver of new drugs’
  • 2Indian historical A participant in or accomplice to a crime being tried who gives evidence for the prosecution.

    ‘he has turned approver in the case’

Pronunciation

approver

/əˈpruvər//əˈpro͞ovər/