What are the hashes in Unspent outputs? I am a newbie to Bitcoin.
Looking at 

curl https://blockchain.info/unspent?active=1Cdid9KFAaatwczBwBttQcwXYCpvK8h7FK


I guess that the script is the owner's address.I am not sure about this.

"unspent_outputs":[

        {
            "tx_hash":"f2c245c38672a5d8fba5a5caa44dcef277a52e916a0603272f91286f2b052706",
            "tx_hash_big_endian":"0627052b6f28912f2703066a912ea577f2ce4da4caa5a5fbd8a57286c345c2f2",
            "tx_index":47854970,
            "tx_output_n": 1,
            "script":"76a9147f9b1a7fb68d60c536c2fd8aeaa53a8f3cc025a888ac",
            "value": 8450000,
            "value_hex": "0080efd0",
            "confirmations":258278
        },


What do tx_hash,tx_hash_big_endian,tx_index,tx_output_n and value stand for?
tx_hash and tx_hash_big_endian are the transaction id of the transaction that this output originated from in little endian and big endian (reversed). 

tx_output_n is the number of the output in the referenced transaction, i.e if a transaction has 5 outputs and you need to refer to the 5th you use a tx_output_n = 5.

tx_index I believe is an internal unique key that blockchain.info uses to identify transactions

script is the ScriptPubKey of the output, that is the conditions you need to fullfill to be able to redeem the coins.