n.

1. 首領；長官；領袖；主任[C]
   The president is also the chief of the armed forces.

   總統也是三軍的統帥。

2. 酋長；族長[C]
   an Indian chief

   印第安酋長

3. 【舊】【口】（表示敬意或客氣的稱呼）先生，老板

a.[B][Z]

1. 等級最高的，為首的
   Don was appointed chief engineer of the project.

   唐被委任為該項工程的總工程師。

2. 最重要的，主要的
   The chief reason for going to school is to learn.

   上學的主要原因是為了學習。

n.

1. a leader or ruler of a people.
   ▸the head of an organization.
2. Heraldry  an ordinary consisting of a broad horizontal band across the top of the shield.
   ▸the upper third of the field.

adj.

1. having the highest rank or authority.
2. most important:
   the chief reason.