mucusnounmasculine/ˈmuku/mediummu·coPortuguesEnglishEspanolFrancaisDefinitionA slimy substance secreted by mucous membranes.During a cold, the body produces more mucus.Mucus helps to trap dust and bacteria.synphlegmsecretionCommon collocationsnasal mucusmucus productionclear mucusEtymologyDo latim 'mucus'.Related wordsmucosomucosamucosidade