Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Nature, Meteorologypeasouperpea‧soup‧er /ˌpiːˈsuːpə $ -ər/ noun [countable] British English old-fashioned DNHEMa very thick fogOrigin peasouper (1800-1900) From the yellow colour of soup made from dried peas ldoceonline.com