Oxford Dictionary English sewage works nounnoun BrE BrE//ˈsuːɪdʒ wɜːks// , BrE//ˈsjuːɪdʒ wɜːks// ; NAmE NAmE//ˈsuːɪdʒ wɜːrks// (also sewage treatment works, sewage disposal works) [countable + singular or plural verb] (British English) Add to my wordlistjump to other resultsa place where chemicals are used to clean sewage so that it can then be allowed to go into rivers, etc. or used to make manureCheck pronunciation: sewage works oxfordlearnersdictionaries.com