château d'eau

[shah-toh doh]
noun, plural châ·teaux d'eau [shah-toh doh] /ʃɑ toʊ ˈdoʊ/. French.
  1. an architecturally treated fountain or cistern.

Origin of château d'eau

lit: castle of water
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018