boltedcap
nounUK /ˈbəʊltɪdˌkæp/
US /ˈboʊltɪdˌkæp/
A boltedcap is a small cap that is held on tight with a bolt.
He screwed the boltedcap onto the pipe so the water would not leak.
OTHER MEANINGS
2. A mushroom with a cap shaped like a rounded bolt head.
We found a boltedcap growing near the old oak tree.
3. A protective metal cover fixed with bolts over machinery.
The worker removed the boltedcap to check the engine.
4. A type of bottle top that must be bolted down after opening.
The boltedcap kept the fizzy drink fresh for days.