Pentail \Pen"tail`\, n. (Zo["o]l.) A peculiar insectivore ({Ptilocercus Lowii}) of Borneo; -- so called from its very long, quill-shaped tail, which is scaly at the base and plumose at the tip.
pentail n : brown tree shrew having a naked tail bilaterally fringed with long stiff hairs on the distal third; of Malaysia [syn: {pen-tail}, {pen-tailed tree shrew}]