Definition of Accubation

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Accubation Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
(n.)
The act or posture of reclining on a couch, as practiced by the ancients at meals.
  
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
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accubation
\ac`cu*ba"tion\ (&?;), n. [l. accubatio, for accubitio, fr. accubare to recline; ad + cubare to lie down. see accumb.] the act or posture of reclining on a couch, as practiced by the ancients at meals.

Grandiloquent Dictionary
The practice of eating or drinking while lying down