[verb oh-ver-spil; noun oh-ver-spil]

verb (used without object), o·ver·spilled or o·ver·spilt, o·ver·spill·ing.

to spill over.


the act of spilling over.
something that spills over.
British. overflow.

Origin of overspill

First recorded in 1850–55; over- + spill1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for overspill

Historical Examples of overspill

  • The Westerners are the overspill of the enterprising population of the East.

  • A Kaffir tribe to the north-east of the Rooirand had known of it, but they had never worked it, but only collected the overspill.

    Prester John

    John Buchan

British Dictionary definitions for overspill


noun (ˈəʊvəˌspɪl)

  1. something that spills over or is in excess
  2. (as modifier)overspill population

verb (ˌəʊvəˈspɪl) -spills, -spilling, -spilt or -spilled

(intr) to overflow
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012