ῥικνόομαι

English (LSJ)

Pass.,

   A grow stiff or be shrivelled by frost, heat, or old age, Arist.HA553a13, Opp.H.5.593, Sor.1.15.    II dance with unseemly contortions, S.Fr.316, cf. Luc.Lex.8.    III later Act., have sexual intercourse, πρὸς ἄνδρα, πρὸς γυναῖκα, PMag.Leid.W.6.28.