Meaning of “blank” - Learner’s Dictionary

blank

adjective uk us /blæŋk/
EMPTY

B1 with no writing, pictures, or sound:

a blank page
a blank tape
The space for the date was left blank.
go blank

If your mind goes blank, you suddenly cannot remember or think of something.

NO FEELING

showing no feeling or understanding:

a blank expression
→ See also point-blank

(Definition of “blank adjective” from the Cambridge Learner’s Dictionary © Cambridge University Press)