高手

gāoshǒu
  1. expert
  2. past master
  3. dab hand

CEDICT

Entry Composition

1 高 gāo
  1. high
  2. tall
  3. above average
  4. loud
  5. your (honorific)
2 手 shǒu
  1. hand
  2. (formal) to hold
  3. person engaged in certain types of work
  4. person skilled in certain types of work
  5. personal(ly)
  6. convenient
  7. classifier for skill

classifiers: 雙, 隻