n.

1. 首领；领袖；长官[C]
   The president is also the chief of the armed forces.

   总统也是三军的统帅。

2. 酋长；族长[C]
   an Indian chief

   印第安酋长

3. 【旧】【口】（表示敬意或客气的称呼）先生，老板

a.[B][Z]

1. 等级最高的，为首的
   Don was appointed chief engineer of the project.

   唐被委任为该项工程的总工程师。

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

   上学的主要原因是为了学习。

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.