a Pournelle rapid-fire automatic...'" (The Man-Kzin Wars, p. 99)
I googled this phrase (see link) and found this phrase. I think this means that Poul Anderson has imagined a rifle named after Jerry Pournelle rather than there being a rifle named after Pournelle. Either way, a nice touch.
"...the glacier had gouged a deep, almost sheer-walled coulee..." (p. 100)
"The bottom was talus..." (ibid.)
"...wave patterns spreading from countless centers to form an ever-changing moire." (p. 109)
Sometimes a word is familiar but not its precise meaning. Sometimes even the word is unfamiliar. How can a writer wanting to imitate Poul Anderson acquire such a large vocabulary?