I am a huge fan of literals. To me is simply means many loves. Past that are relationship and ethical constructs of the individuals involved.
The design of the relationship and how well it communicates or operates does not make it poly... loving more than one person does. Does the person who sucks at communication, maybe hides the truth and enjoys the love of multiple people not think hes poly... I don't think so. He just happens to suck at relationships.
thats my take anyways.