What is Blank ?
Blank is (adj) 1. (of paper) with no writing on it She took a blank piece of paper and drew a map. 2. he looked blank he didn’t seem to know anything about it When she mentioned the money he owed, he just looked blank. blank cassette or tape a cassette or tape which has nothing recorded on it (noun) 1. an empty space on a piece of paper Just fill in the blanks on the form. 2. my mind is a blank I can’t remember anything about it to draw a blank to get no result When she tried to trace her father, she drew a blank. 3. same as blank cartridge The police fired blanks into the crowd of protesters. point-blank
source: Easier English, Student Dictionary Upper Intermediate Level