drainage system

1. 1.

   a system of watercourses or drains for carrying off excess water

   Broadersystem

Questions about drainage system

What does drainage system mean?

drainage system means "a system of watercourses or drains for carrying off excess water".

Is drainage system a common word?

drainage system is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.