Definition of: overflow

(ō′vər·flō′) v. ·flowed, ·flown, ·flow·ing v.i.
1. To flow or run over the brim or bank, as water, rivers, etc.
2. To be filled beyond capacity; spill over.
3. To super-abound.
—v.t.
4. To flow over the brim or bank of.
5. To flow or spread over; cover.
6. To fill beyond capacity; cause to overflow. See synonyms under INUNDATE.
—noun (ō′vər·flō′)
1. The act of overflowing.
2. That which flows over.
3. A flood.
4. A surplus.
5. A passage or outlet for liquid. [OE oferflōwan]