Achilles Heel

[wml]

My english teacher in china told me if I'm very weak at something. I can say that's Achilles Heel or waterloo. But when I said to my american friend:" English is my Achilles Heel." he just didn't get it. Does it appear frequently, or nobody say that?

[Casiopea]

It depends on the person and the age group.
Generally speaking, today's youth do not use the idiom "Achilles Heel".

[wml]

Thank you very much ^^
I may try to use it when I talk to old people 0_<

[MW]

Any weakness.

However, waterloo is very different. It refers to Napolean's great loss at Waterloo and means your undoing or end.

[wml]

yep..... thanks