a.

1. （人、行为等）古怪的，反常的
   My neighbor is an eccentric young man.

   我的邻居是个古怪的年轻人。

2. 不同圆心的
3. 【天】（轨道）不正圆的；【机】偏心的
   That is an eccentric wheel.

   那是个偏心轮。

n.[C]

1. 古怪的人
   The old lady is a bit of an eccentric.

   这位老太是个有点古怪的人。

2. 偏心圆
3. 【机】偏心轮

adj.

1. unconventional and slightly strange.
2. technical not placed centrally or not having its axis placed centrally.
   ▸(of an orbit) not circular, especially to a marked degree.

n.

1. an eccentric person.
2. a cam or other part mounted eccentrically on a revolving shaft in order to transform rotation into backward-and-forward motion.