懂眼

dǒngyǎn
  1. (coll.) to know the ropes
  2. an expert

CEDICT

colloquial

Entry Composition

1 懂 dǒng
  1. to understand
  2. to comprehend
2 眼 yǎn
  1. (often used with 一 yī) a look; a glance
  2. small hole
  3. (bound form) salient point
  4. classifier for wells, cave-dwellings etc

classifiers: 隻, 雙