The Collaborative International Dictionary
Paxilli
Paxillus \Pax*il"lus\, n.; pl. Paxilli. [L., a peg.] (Zo["o]l.) One of a peculiar kind of spines covering the surface of certain starfishes. They are pillarlike, with a flattened summit which is covered with minute spinules or granules. See Illustration in Appendix.
Wiktionary
paxilli
n. (plural of paxillus English)