Definition of "Argument" :

noun: a course of reasoning aimed at demonstrating a truth or falsehood; the methodical process of logical reasoning

noun: a variable in a logical or mathematical expression whose value determines the dependent variable; if f(x)=y, x is the independent variable

noun: (computer science) a reference or value that is passed to a function, procedure, subroutine, command, or program

noun: a summary of the subject or plot of a literary work or play or movie

"The editor added the argument to the poem."

noun: a fact or assertion offered as evidence that something is true

"It was a strong argument that his hypothesis was true."

noun: a discussion in which reasons are advanced for and against some proposition or proposal

"The argument over foreign aid goes on and on."

noun: a contentious speech act; a dispute where there is strong disagreement

"They were involved in a violent argument."