What does 'run down' mean?

[tati]

Test No. incompl/inter-41 "Good Bye", question 2

To be honest I was feeling a bit ......... down.

(a) pushed
(b) pulled
(c) switched
(d) run

Test No. incompl/inter-41 "Good Bye", answer 2

To be honest I was feeling a bit run down.

Correct answer: (d) run

Your answer was: incorrect
To be honest I was feeling a bit pulled down.
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dear Alan

Please explain to me whats the meaning of run down

[Alan]

This means not feeling very well.
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English as a Second Language
You can read my ESL story Present Simple

[Ft_Louie]

So, does the phrasal verb "pull down" have the same meaning with "let down"?

[Our Tort System]

You can find the definitions of both phrasal verbs here:
http://www.thefreedictionary.com/pull%20down
http://www.thefreedictionary.com/let%20down

They have very little in common.
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