From Longman Dictionary of Contemporary Englishdraw a blankdraw a blankinformalFAIL to be unsuccessful in finding information or the answer to a problem All his investigations have drawn a blank so far. → draw
Examples from the Corpus
draw a blank• Well, we've drawn a blank.• Once again police investigators have drawn a blank.• He used the word discreet and drew a blank.• No, I draw a blank.• Outside, it is closing time and we have drawn a blank.• Police inquiries so far have drawn a blank.• But other experiments continue to draw blanks, as two recent papers in Physical Review Letters report.• Maggie had drawn a blank, none of the bodies were of those she was looking for.• I just drew a blank on the last test question.• Ron Wyden, drew a blank when asked where Bosnia was. 