a.

1. 有資格當選的；法律上合格的[F][（+for）][+to-v]
   He is eligible for retirement.

   他合乎退休條件。

   Only citizens are eligible to vote.

   只有公民有選舉資格。

2. （尤指婚姻等）合適的，合意的
   Helen married an eligible bachelor.

   海倫嫁給了一個中意的單身漢。

n.

1. 合格者，合適的人

adj.

1. (often eligible for/to do something) satisfying the appropriate conditions.
2. desirable as a spouse:
   an eligible bachelor.