silencecap
nounUK /ˈsaɪlənsˌkæp/
US /ˈsaɪlənsˌkæp/
A silencecap is a little cap you put on something to make it quiet.
She put a silencecap on the squeaky door so it would not wake the baby.
RELATED WORDS
OTHER MEANINGS
2. A small cover placed over a microphone to soften loud sounds.
The singer used a silencecap on the mic during the loud drum solo.
3. A cap worn as a sign that someone should stay quiet.
The librarian wore a silencecap to remind everyone to whisper.
4. A magical hat that makes everything around it silent.
In the story, the wizard's silencecap made the whole castle go quiet.