Does "soluble in alcohol" imply ethanol? Sources like Wikipedia and SolubilityOfThings say that copper (II) acetate is soluble in alcohol.

Does that mean any alcohol, or does "alcohol" in this context mean ethanol?
The term "alcohol", without modification (i.e. "propyl" alcohol, etc.), in the context of something like a solubility table, almost always refers to ethanol (as it does in your sources for copper (II) acetate solubility).  

Note, for example, that both pubchem and Wikipedia list alcohol as a synonym for ethanol. This is not the case for other alcohols like isopropanol.