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The reference is to the murder of Thorin's grandfather Thror a few paragraphs earlier: "Your grandfather Thror was killed, you remember, in the mines of Moria by Azog the Goblin." So when Thorin says "We have long ago paid the goblins of Moria", he is speaking of revenge. The modern idiom (in American English, anyway) would be "We long ago paid back the ...


14

He means that they metaphorically "paid back" (i.e. took revenge upon) the goblins for their role in Thror's death. At the Battle of Azanulbizar, where Thorin earned his name "Oakenshield" and his cousin Dain slew Azog the goblin king, the dwarves exacted their vengeance for the murder of the king of the Longbeards. Per Tolkien Gateway: The War of the ...


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