ex·pec·to·rant
noun/ɪkˈspektərənt/
/ɪkˈspektərənt/
(medical)- a cough medicine that helps you to get rid of phlegm (= a thick substance) from the lungs
祛痰药 Word Originmid 18th cent.: from Latin expectorant- ‘expelling from the chest’, from the verb expectorare, from ex- ‘out’ + pectus, pector- ‘breast’.