to stop breathing for a short time; people say don't hold your breath! to emphasize that sth will take a long time or may not happen; to be anxious while you are waiting for sth that you are worried about
Oxford63% of films
to stop breathing for a short time
Remember to breathe now, don't hold your breath.
Oxford25% of films
people say don't hold your breath! to emphasize that sth will take a long time or may not happen
Oxford13% of films
to be anxious while you are waiting for sth that you are worried about
Hold your breath It gets better
Definitions from the Oxford Advanced Learner's Dictionary, 9th edition