The Collaborative International Dictionary
Palpocil
Palpocil \Pal"po*cil\, n. [See Palpus, and Cilium.] (Zo["o]l.) A minute soft filamentary process springing from the surface of certain hydroids and sponges.
Wiktionary
palpocil
n. (context zoology English) A minute soft filamentary process springing from the surface of certain hydroids and sponges.