Tower With Sails That Drains a Marsh or Swamp

This page is the CodyCross answer for the clue below from Home Sweet Home, Group 621, Puzzle 4 (Welcome Mat).

Question is: Tower With Sails That Drains a Marsh or Swamp

and the answer is: WINDPUMP

Word Meaning:

WINDPUMP — A structure somewhat like a windmill for pumping water, either for drainage or for irrigation

Definitions from Wiktionary.