ἀμφιθάλαμος
From LSJ
Οὐκ ἔστιν ἀγαθὸν ἐν ἀνθρώπῳ ὃ φάγεται καὶ ὃ πίεται καὶ ὃ δείξει τῇ ψυχῇ αὐτοῦ ἀγαθὸν ἐν μόχθῳ αὐτοῦ (Ecclesiastes 2:24, LXX version) → What is good in a human is not what he eats and drinks and shows off to his soul as a benefit of his labor
English (LSJ)
ου, prob.
A f.l. for ἀντι-, corresponding chamber, Vitr. 6.7.2.
German (Pape)
[Seite 139] mit Zimmern auf beiden Seiten.
Greek (Liddell-Scott)
ἀμφιθάλᾰμος: -ον, ὁ ἔχων θαλάμους ἑκατέρωθεν, Βιτρούβ. 6. 7, 2.