n. a course of reasoning aimed at demonstrating a truth or falsehood; the methodical process of logical reasoning; "I can't follow your line of reasoning"

n. a summary of the subject or plot of a literary work or play or movie; "the editor added the argument to the poem"

n. a fact or assertion offered as evidence that something is true; "it was a strong argument that his hypothesis was true"

n. a discussion in which reasons are advanced for and against some proposition or proposal; "the argument over foreign aid goes on and on"

n. a contentious speech act; a dispute where there is strong disagreement; "they were involved in a violent argument"