From Longman Dictionary of Contemporary Englishbreathe out phrasal verbBREATHEto send air out from your lungs → exhale Jim breathed out deeply.breathe something ↔ out Lauren lit up a cigarette, then breathed out a puff of smoke. → breathe→ See Verb table
Examples from the Corpus
breathe out• Ballet dancers are taught to breathe in before they leap, and to breathe out after they land.• The doctor told her to breathe out slowly. 