ὑπόσταλσις
From LSJ
ἠργάζετο τῷ σώματι μισθαρνοῦσα τοῖς βουλομένοις αὐτῇ πλησιάζειν → she lived as a prostitute letting out her person for hire to those who wished to enjoy her, she worked with her body by hiring herself out to anyone who wanted to have sex with her
English (LSJ)
εως, ἡ, A drawing in, contraction, τῆς κοιλίας prob. l. in Arist.HA499a21.
Greek (Liddell-Scott)
ὑπόσταλσις: -εως, ἡ, συστολή, τῆς κοιλίας, πιθαν. γραφὴ ἐν Ἀριστ. π. τὰ Ζ. Ἱστ. 2. 1, 25.