plural of opposite number

(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 ...

(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.