παρεμβαίνω

A. fit in, εἰς ἐπιτομήν Ph. Bel. 66.39 ; go in beside another, Plu. 2.593f ; τεθρίππῳ π. to be mounted beside another on . . , D.H. 2.34 ; ἐφ’ ἁρματίου Id. 5.47, etc.