I vaguely remembered the Thagomizer. What I didn’t realize was that the term has been adopted by paleontologists:
Whatever was the original word for the stegosaurus’ spiked tail, if it indeed ever had one, “thagomizer” has, since the Far Side publication, been adopted as a genuine anatomical term, and is used by multiple palaeontological authorities, including the Smithsonian Institution.[1]
“Now this end is called the thagomizer, after the late Thag Simmons.”