Alternative form of cathole

A phenomenon in which phonons (sound perturbations) are unable to escape from a fluid that is flowing more quickly than the local speed of sound.

The opening in a glass furnace through which fuel is introduced.

Alternative form of top-hole

(chiefly UK, informal) Of very high quality, tip-top.

Alternative form of hellhole

Alternative form of hellhole

Alternative form of hellhole

Alternative form of high-holder

simple past tense and past participle of hole punch