Sentence:  page 41: “It's called a ‘<WSD>binky</WSD>',” said Crystal. “It's a rabbit happy-dance.” / [http://books.google.com/books?id=ooHjVWk0ua0C&pg=PA65&dq=binkies page 65]: Binky did one of his famous <WSD>binkies</WSD>. He darted down the length of the run, then hopped and twisted ... 
Meaning of the word marked with <WSD> tags:  A high hop that a rabbit may perform when happy.