(medicine) A canopy for the head and shoulders, or a similar enclosure for the whole body, within which air having a higher than normal supply of oxygen can be administered to a patient.

(UK regional) Encrusted, especially with dirt and grime.

An unrecognized micronation in Antarctica, founded in 2001 by Travis McHenry, who styles himself as Grand Duke Travis, claiming a region of West Antarctica which has not been claimed by any nation ...

plural of opposite number