Here are some examples of words containing "-droit-":
* Adroit: Skillful, adept (meaning "to the right")
* A droit: Straight, directly (meaning "to the right")
* Droit: Law, right, justice (meaning "right")
* Droit de seigneur: The right of the lord (meaning "right of the lord")
* Extraterritoriality: Exemption from the jurisdiction of the local law (meaning "outside the territory's right")
So, whenever you encounter "-droit-" in a word, it usually relates to rights, law, or legal matters.