- a blanket dampened with water so as to extinguish a fire.
- a person or thing that dampens enthusiasm or enjoyment: Nobody asked him to join the group because he's such a wet blanket.
- to extinguish (a fire) with a wet blanket.
- to dampen the enthusiasm or enjoyment of (a person, group, etc.).
- a person whose low spirits or lack of enthusiasm have a depressing effect on others
