tightening strap
nounUK /ˈtaɪtənɪŋ stræp/
US /ˈtaɪtənɪŋ stræp/
A strap you pull to make something hold on tight.
He pulled the tightening strap to keep the box closed.
OTHER MEANINGS
2. A strap used to secure cargo on a truck or trailer.
The driver checked every tightening strap before the long haul.
3. A band on a backpack or helmet that adjusts the fit.
She loosened the tightening strap on her helmet after the ride.
4. A device strap that compresses or squeezes something into place.
The tightening strap held the bundle of firewood together.