bisagra
hinge
Bisagra means hinge. While the 'bi-' prefix suggests 'two', which fits with a hinge's two parts, it's best to learn this word as a whole.
noun
- hingeA mechanical device that connects two solid objects, typically allowing only a limited angle of rotation between themLa puerta chirría porque la bisagra está oxidada. // The door squeaks because the hinge is rusty.