Dictionary

To cut or score; to wound superficially.

To prevent (something) from being successful.

Example: The rain scotched his plans of going to the beach.

To debunk or discredit an idea or rumor.

Example: The prime minister scotched rumors of his resignation.

To block a wheel or other round object.

Example: The workers stopped the rig on an incline and scotched the wheels.

(Australian rhyming slang) To rape.