interventio
From LSJ
ἀλώπηξ, αἰετοῦ ἅ τ' ἀναπιτναμένα ῥόμβον ἴσχει → a fox, which, by spreading itself out, wards off the eagle's swoop
Latin > English (Lewis & Short)
interventĭo: ōnis, f. intervenio,
I an interposition, a giving security (post-class.), Dig. 4, 4, 7, § 3.
Latin > French (Gaffiot 2016)
interventĭō, ōnis, f. (intervenio), garantie, caution : Ulp. Dig. 4, 4, 7.