#1 overflow v. [overrun, well over, run over, brim over] flow or run over (a limit or brim). wn #2 overflow n. [flood, outpouring] a large flow. wn #3 overflow n. [runoff, overspill] the occurrence of surplus liquid (as water) exceeding the limit or capacity. wn #4 overflow v. [bubble over, spill over] overflow with a certain feeling; "The children bubbled over with joy"; "My boss was bubbling over with anger". wn