Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Musicplainchantplain‧chant /ˈpleɪntʃɑːnt $ -tʃænt/ noun [uncountable] APMplainsongExamples from the Corpusplainchant• A comparable example in the West is the Latin liturgy set to plainchant. ldoceonline.com