Below you can find the Used to treat headaches this mint family member's name may come from the latin lavare to wash Jeopardy Words Answer. The answer to Used to treat headaches this mint family member's name may come from the latin lavare to wash has 8 letters. This clue belongs to the What is it good for? category and is part of Jeopardy Word Level 1488. If you scroll near the bottom you will find other clues and answers part of level 1488