1. An amount of liquid or material that spills over the edge or capacity of a container
2. A place or facility that receives excess people or goods when the primary location is full
Usage: British English

1. To flow or run over the edge or brim of a container; to overflow
Usage: third person singular present tense of overspill
2. To exceed capacity or limits; to have more than can be contained
Usage: third person singular present tense of overspill

Examples

• The overspills from the damaged pipe flooded the basement.
• During rush hour, the main parking lot reaches capacity and cars use the overspills.
• When the bathtub is too full, water overspills onto the bathroom floor.
• The container overspills whenever we pour too much liquid into it.
• The city built an overspills area to handle excess population from the downtown district.
• Enthusiasm for the concert overspills into the streets as fans gather outside.
• The river overspills its banks during heavy rainfall.
• Demand for tickets overspills the initial allocation within hours.