IPA: /ˈsʌlɪdʒ/
KK: /sʌlɪdʒ/
Waste materials or sewage that are often left behind after water has been used or has flowed through an area.
The river was polluted with sullage from the nearby factories.
Sullage originates from Old French 'sullage' (meaning waste or refuse), which is derived from the verb 'sullier' (meaning to soil or to make dirty). The term refers to waste or dirty water, particularly that which is produced in the process of washing or cleaning.
Think of 'sullage' as waste that comes from making things dirty or soiled, connecting it to the idea of refuse or dirty water.