| 疑窦 | yí dòu | (literary) doubts; suspicions; cause for suspicion | |
| 情窦初开 | qíng dòu chū kāi | first awakening of love (usually of a girl) (idiom) | |
| 鼻窦炎 | bí dòu yán | sinusitis | |
| 鼻窦 | bí dòu | paranasal sinus | |
| 利玛窦 | lì mǎ dòu | Matteo Ricci (1552-1610), Jesuit missionary and translator in Ming China |
| 1 | Between these cords are wide thinwalled blood vessels called sinusoids. | |
| 2 | Doctors don't really know much about sinuses, only that we have a lot of them. | |
| 3 | Then he was struck with a severe sinus infection, which led to two ER visits. | |
| 4 | Those complaints include chronic sinus congestion, constipation, and even symptoms resembling asthma. | |
| 5 | Dou' s boss paid, but when Dou demanded compensation he was fired. "I did not have a labour contract," Dou says. |