the.com/drains
Civilization's plumbing confession: everything eventually goes down, and the city pretends not to notice.
means Channels or pipes that carry away unwanted water or waste, or the act of emptying something out.
from From Old English dreahnian, to strain or filter dry — same root as drought, when water leaves and doesn't come back.
Word swallowTo drain also means to exhaust completely.
Roman legacyRome's Cloaca Maxima still drains streets today.
Hidden riversMany city drains were once actual rivers.