According to Merriam-Webster, a definition of Congress is "1a: the act or action of coming together and meeting". The first known use of the word is "1528, in the meaning defined at sense 1a" and the etymology of the word is as follows:
Latin congressus, from congredi to come together, from com- + gradi to go
The first use of the word "Congress" referred to "The act or action of coming together or meeting" while the current use of the word seems to be preferential towards the idea that "Congress" is an "entity" rather than an "action" between two parties such as "The House Of Representatives" and the "Senate" which would in effect form the "Congress".
My question is, at the time of its use within the Constitution of The United States Of America would the word "Congress" be correctly defined if it alluded to anything other than a "meeting" or "the action of meeting"?
It is understood that there are multiple definitions for the term "congress", for the purpose of this post I am looking for the definition that was originally intended when written within the Constitution and if possible some supporting evidence such as context clues, other uses of the word during that time period, sentence structuring, or other evidence. One such example of a definition is the act of meeting where as later definitions seem to point to the word "congress" referring to an entity rather than an action.