overflowTranslate overflow | into French | into German | into Italian | into Spanish Definition of overflow verb Pronunciation: /əʊvəˈfləʊ/ [no object] (especially of a liquid) flow over the brim of a receptacle:chemicals overflowed from a storage tank [with object]:the river overflowed its banks (of a container) be so full that the contents go over the sides:boxes overflowing with bright flowers (as adjective overflowing)an overflowing ashtray (of a space) be so crowded that people spill out:the waiting area was overflowing [with object] flood or flow over (a surface or area):her hair overflowed her shoulders (overflow with) be very full of (an emotion or quality):her heart overflowed with joy noun Pronunciation: /ˈəʊvəfləʊ/ 1 [mass noun] the flowing over of a liquid:there was some overflow after heavy rainfall [count noun]:an overflow of sewage [in singular] the excess or surplus not able to be accommodated by an available space:to accommodate the overflow five more offices have been built 2 (also overflow pipe) (in a bath or sink) an outlet for excess water. 3 [mass noun] Computing the generation of a number or other data item which is too large for the assigned location or memory space. Phrases full to overflowing completely full: the order book was full to overflowing a knapsack full to overflowing with clothesOrigin: Old English oferflōwan (see over-, flow)overflow in other Oxford dictionaries Definition of overflow in the US English dictionary