Ambiguity

Today I endured a painful 3 hour discussion on the Aeneid. I don't mind the book or the discussion group at all. In fact, a enjoy them very much. However, the word "reason" came into use during discussion. Many different people began using the word in different ways. Reason, like logic? Reason, like objectified explanation? The definition of the word remained ambiguous throughout the discussion and I became so frustrated because there was a weird communication defect happening in the group. But somehow, I feel as though accepting the ambiguous is extremely important. Although the discussion would have been much better if the word had not remained ambiguous, but was defined, the ambiguity of the word allowed for a lot of otherwise impossible flexibility. Is it acceptable deny definition for the sake of flexibility? In many situations I think it is acceptable to allow the complete definition of the ambiguous to remain enigmatic.