a. 1. Leaning or reclining, as the ancients did at their meals. [ 1913 Webster ]
The Roman . . . accumbent posture in eating. Arbuthnot. [ 1913 Webster ]
2. (Bot.) Lying against anything, as one part of a leaf against another leaf. Gray. [ 1913 Webster ]
Accumbent cotyledons have their edges placed against the caulicle. Eaton. [ 1913 Webster ]
n. One who reclines at table. [ 1913 Webster ]