Sentence:  She had Lord James' collar in one big fist and she <WSD>pounded</WSD> the table with the other and talked a blue streak. Nobody could make out plain what she said, for she was mainly jabbering Swede lingo, but there was English enough, of a kind, to give us some idee. 
Meaning of the word marked with <WSD> tags:  To strike hard, usually repeatedly.