Meanings
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1
noun
something that spills, flows, or extends beyond a container, boundary, or available capacity
Temporary rooms were opened to accommodate the overspill from the crowded hall.
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2
noun
British: people or development relocated from an overcrowded urban area
The new town was planned to receive overspill from the nearby city.
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3
verb
to spill or extend beyond a limit, boundary, or capacity
Vigorous vines overspill the wall and trail toward the pavement.
Thesaurus
Etymology
A compound of over- + spill. The literal idea of material spilling beyond its limit broadened to crowds, development, emotion, and other kinds of excess; British planning language gave the noun a specialized urban-relocation sense.