n.

1. 虛弱；軟弱；薄弱[U]
   Weakness compelled him to retire early.

   他因身體虛弱而較早退休。

2. 弱點；缺點[C]
   We all have our little weaknesses.

   我們大家都有自己的小毛病。

   Angling for compliments is one of his weaknesses.

   愛聽恭維話是他的毛病之一。

3. 嗜好；偏愛[C][S1][（+for）]
   His weakness for cigarettes is detrimental to his health.

   他抽菸的嗜好對他的身體有害。

n.

1. the state of being weak.
2. a disadvantage or fault.
3. a person or thing that one is unable to resist.
   ▸ (weakness for) a self-indulgent liking for.