窦

竇
dòu
noun #19,011

Meanings

  1. 1 (anatomy) cavity; sinus
  2. 2 hole; aperture
  3. 3 surname Dou

Examples

HSK 2
Tā xìng Dòu, shì gè yīshēng.
His surname is Dou; he is a doctor.
HSK 7-9
Bí dòu yán huì dǎozhì tóutòng hé bísè.
Sinusitis can cause headaches and nasal congestion.

Components

radical
穴 xué
cave; hole (Kangxi #116)
Top 穴 - pictograph of a cave entrance with roof and side supports, the indexing radical for hole-and-cavity words (空 empty, 穿 pierce, 窗 window). Sets the medical meaning 'sinus, cavity' as literally a small cave inside the body, and the literary 'hole, aperture' as any opening.
phonetic
卖 mài
to sell
Bottom 卖 supplies the sound through historical drift: the simplified 卖 stands in for the traditional 賣 / 瀆 phonetic series giving readings like dú and dòu. Modern dòu is preserved despite the visual change. Same simplified phonetic appears in 渎 (ditch) and 读 (read), each with a related dú/dòu reading.

Stroke Order

窦 dòu