argument, argumentation, debate -- (a discussion in which reasons are advanced for and against some proposition or proposal; "the argument over foreign aid goes on and on")
argument, literary argument -- (a summary of the subject or plot of a literary work or play or movie; "the editor added the argument to the poem")
argument, parameter -- ((computer science) a reference or value that is passed to a function, procedure, subroutine, command, or program)
argument -- (a variable in a logical or mathematical expression whose value determines the dependent variable; if f(x)=y, x is the independent variable)
argumentation, logical argument, argument, line of reasoning, line -- (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")