n.
     - a heated exchange of conflicting views.
- a set of reasons given in support of something.
- Mathematics  & Logic  an independent variable associated with a function or proposition and determining its value, e.g. x in y = F(x).
- Linguistics  any of the noun phrases in a clause that are related directly to the verb.
- archaic a summary of the subject matter of a book.
Etymology
  ME: via OFr. from L. argumentum, from arguere ‘make clear, prove, accuse’.