RhymeZone: decubital definitions

Definitions of decubital:

adjective: (medicine, broadly) Any position of lying down.
adjective: (medicine, less broadly) A position of lying on one's side, in contrast with supine or prone positions of lying down.
adjective: (medicine, dated) Relating to a pressure ulcer (a decubitus ulcer, that is, a bedsore).

(Definitions from Wiktionary)