concubatio
From LSJ
ἔοικα γοῦν τούτου γε σμικρῷ τινι αὐτῷ τούτῳ σοφώτερος εἶναι, ὅτι ἃ μὴ οἶδα οὐδὲ οἴομαι εἰδέναι → I seem, then, in just this little thing to be wiser than this man at any rate, that what I do not know I do not think I know either
Latin > English (Lewis & Short)
concŭbātĭo: ōnis, f. concubo,
I a lying or reclining upon: dura lecti, Cael. Aur. Acut. 2, 37, 193.
Latin > French (Gaffiot 2016)
concŭbātĭō, ōnis, f., arrangement de la couche : lecti concubatio dura C. Aur. Acut. 2, 37, 193, une couche dure.