blotter Syllabification: (blot·ter)Pronunciation: /ˈblätər/Translate blotter | into Italian Definition of blotter noun 1a sheet or pad of blotting paper inserted into a frame and kept on a desk. 2North American a temporary recording book, especially a police charge sheet:the boys ended up on police blotters for property crimesblotter in other Oxford dictionaries Definition of blotter in the British & World English dictionary