The definition of sibilance is when something has an s or sh sound. An example of sibilance is the hissing of a snake.
A wrench (or spanner outside of North America) is a tool used to provide grip and mechanical advantage in applying torque to turn objectsâusually rotary fasteners, such as nuts and boltsâor keep them from turning. In Commonwealth English (excluding Canada), spanner is the standard term.
1 A pawl, click, or detent for holding or propelling a ratchet wheel, or ratch, etc. 2  A mechanism composed of a ratchet wheel, or ratch and pawl. 3  A ratchet wrench. ( analogous) A procedure or regulation that goes in one direction, usually up.