ETYM AS. dwaescan. (Skeat.).
1. To wet thoroughly; SYN. dowse.
2. To put out, as of a candle or a light; SYN. put out.
3. To slacken; SYN. dowse.
4. (Sailing) To lower quickly.

Douse.

1. To provide with water.
2. To pour water on; SYN. irrigate.
3. To fill with tears.
4. To secrete or form water, as tears or saliva:.

ETYM Latin perfusio.
Pumping a liquid into an organ or tissue (especially by way of blood vessels).