ζευγνύναι
From LSJ
ἔστιν δέ που ἡ μὲν ἐπὶ σώμασι γυμναστική, ἡ δ' ἐπὶ ψυχῇ μουσική → I think I am right in saying that we have physical exercise for the body and the arts for the soul
Greek > English (Woodhouse Verbs Reversed)
(see also ζεύγνυμι): undergird, undergird a ship, unite in marriage, with a bridge
