noun. a colorless flammable volatile liquid hydrocarbon used as a solvent.
2. Noun, singular or mass John Dee with This Old House suggests a strong solvent such as xylol to remove all dirt and grease effectively. 3. Proper noun, singular There are several usable solvents, but xylene or xylol is the one most often used for this. 4. Verb, base form High exposure to xylol can cause harmful neurological effects such as headaches and dizziness.