I've seen some interesting oddball glass that was medical or scientific in original purpose. I got no idea though.
How much does it hold? Could it be a measuring cup of some kind? Have you tried pouring water or oil from the 4 spouts, is it handy and convenient if used that way? I never really found that more than one spout was necessary but as I looked around I saw a number of things, water bottles, pitchers, etc that had 4 spouts kinda like that.