en·tre·deux \|äⁿ.trə|də, -də̄, -|dər(.), F äⁿ.trədœ̅\noun (pluralentre·deux \-ə(z), -ə̄(z), -ər., -ərz, -œ̅\) Etymology: French, from entre- + deux two, from Latin duos, accusative of duo — more at two : something placed between two things; specifically: insertion 2b