slit
nounUK /slɪt/
US /slɪt/
A long, thin cut or opening.
She looked through a narrow slit in the curtains.
OTHER MEANINGS
2. To make a long, thin cut in something.
He slit the envelope open with a knife.
3. A narrow opening in a machine or garment.
Drop the coin into the slit on top of the box.
4. A long, narrow cut in the skin.
The cat had a small slit on its ear.