穴 - hole, aperture, slit

pitfall; trap; pit

grave (pit)

filling (up) a hole

cave; cavern; den; grotto

hole; opening; orifice; perforation

air hole; windhole; air vent

bucket; pail

the seven orifices of the head (eyes, nostrils, ear canals, mouth)

nostril

large hole

(staring) piercingly; (looking) hard

a burn hole