I would tend to disagree with the Cambridge example, because liquids can be dry. “Dry” liquids are anhydrous, meaning they’ve been treated to remove any water.
Source: Am chemist and I teach O-Chem, which frequently uses dry solvents, like anhydrous acetone.
Perchloroethylene (aka tetrachloroethene) is a completely non-polar compound, so, yes, it is a dry liquid.