Nantoka/乳突窦rǔ tū dòuTraditional: 乳突竇乳突窦 (rǔ tū dòu) is a Chinese word meaning “(anatomy) mastoid antrum”.Meanings1(anatomy) mastoid antrumCharacters in 乳突窦乳rǔ · (bound form) breast突tū · to dash窦dòu · (literary) hole; apertureRelated words突然sudden; abrupt; unexpected冲突conflict突破to break through乳(bound form) breast乳房breast乳头nipple突出prominent突发to occur suddenly突击sudden and violent attack乳酪cheese突袭to raid; to storm突击队commando unitStudy Chinese with flashcards →