第一把手

dìyībǎshǒu
  1. the person in charge
  2. the head of the leadership group

CEDICT

Entry Composition

1 第一 dìyī
  1. first
  2. most important; primary; foremost
=2 把手 bǎshǒu to shake hands
=2 把手 bǎshou
  1. handle
  2. grip
  3. knob