a.

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

   我的鄰居是個古怪的年輕人。

2. 不同圓心的
3. 【天】（軌道）不正圓的；【機】偏心的
   That is an eccentric wheel.

   那是個偏心輪。

n.[C]

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

   這位老太是個有點古怪的人。

2. 偏心圓
3. 【機】偏心輪

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.