Porcupine

From WikiPOBia

The porcupine is a rodent, having spines to protect itself, that is found in both Old and New World varieties. One reference in the series to the animal actually appears to be a malapropism. From Jack's conversation with the quartermaster at the con, in The Thirteen-Gun Salute:

"A lovely young woman indeed, Heaven," said Jack. "Mrs. Heaven, if I do not mistake?"

"Why, sir, in a manner of speaking: but some might say more on the porcupine-lay, the roving-line, if you understand me."

"There is a good deal to be said for porcupines, Heaven: Solomon had a thousand, and Solomon knew what o'clock it was, I believe. You will certainly see her again."