- The fact or process of spilling over.
- Something that spills over: an overspill of milk.
- Chiefly British Movement of people from overcrowded cities to less populated areas.
- That which spills over.
- New towns were to accommodate overspill from established cities.
(third-person singular simple present overspills, present participle overspilling, simple past and past participle overspilled)
- spillover, spill over