- 1[uncountable, singular] a number of people or things that do not fit into the space available A new office building was built to accommodate the overflow of staff. an overflow garage
- 2[uncountable, singular] the action of liquid flowing out of a container, etc. that is already full; the liquid that flows out an overflow of water from the lake (figurative) an overflow of powerful emotions
- 3(also overflow pipe) [countable] a pipe that allows extra liquid to escape
- 4[countable, usually singular] (computing) a fault that happens because a number or data item (for example, the result of a calculation) is too large for the computer to represent it exactly
Check pronunciation: overflow