A quick look online shows many respected sources calling it a "law". Why are you so afraid of the word?
As far as I can tell from an online search and reference to some old texts in my library - like Gounod's Physics, It has been referred to as the "Law of Gravity" for at least a century and a half. It probably goes back further, but I have no sources at hand at the moment.
We have to stop jumping down people's throats when they use words in a slightly different manner than we do. It turns off people just as quickly as a Jehovah's Witness at the door.
Bob at PC
________________________________________
From: Phys-l [phys-l-bounces@phys-l.org] on behalf of Ken Caviness [caviness@southern.edu]
Sent: Sunday, September 16, 2012 7:43 PM
To: Phys-L@Phys-L.org
Subject: Re: [Phys-L] strange things in chem book
Absolutely false. To call "Newton's Law of Universal Gravitation" a law is false. It's not even true, we have had a more accurate explanation for gravity since 1916: General Relativity. That too is not a final answer, since it demonstrably disagrees with quantum mechanics.