millpond

/ˈmɪlˌpɑnd/
noun
  1. A small body of water created by damming a stream to provide power for a mill.
    • The village children often played near the millpond in summer.
    • The old millpond behind the gristmill is now a peaceful spot for fishing.
    • Ducks swam across the millpond as the waterwheel turned slowly.
  2. A very calm, still body of water, often used in similes (e.g., 'as smooth as a millpond').
    • After the storm, the sea became a millpond, flat and glassy.
    • The lake was as smooth as a millpond, with barely a ripple.
    • We rowed across the millpond-like bay without any trouble.
Synonyms
What does "millpond" mean? | whatsthatwordmean | whatsthatwordmean