Wiktionary
n. A type of question or phrase with one or more words replaced with a blank line, giving the reader the chance to add the missing word(s). vb. 1 To answer or complete #Verb a fill in the blank. 2 (context idiomatic figuratively English) To complete the interruption, ambiguity or vagueness in understanding, perception or context of a situation.
Usage examples of "fill in the blank".
Norman did most of his typing on his processor, but the few uses he still had for the old IBMofficial documents, fill in the blank forms, and the likewere just important enough to make it a necessity.
Each of them set up his or her telescope and, when Professor Marchbanks gave the word, proceeded to fill in the blank star-chart they had been given.
Make a list of folks to be viewed with suspicion, Charonese would lead it every time, distantly followed by Plutonians, then fill in the blank with the nearest neighbor you didn't care for.
I fill in the blank with something that's of interest to me, then build the plot on that subject.
Each jury can fill in the blank for a verdict, and there's no way to control the costs.