pentail

from The Century Dictionary.

• noun An insectivorous animal of the family Tupaiidæ, one of the squirrel-shrews of the genus Ptilocercus (which see), P. lowi, an inhabitant of Borneo: so called from its long tail, which is two thirds naked and ends in a distichous fringe of long hairs, like a quill pen.
• noun The pintail, a duck.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An insectivore (Ptilocercus lowii) of Borneo, with a very long, quill-shaped tail, which is scaly at the base and plumose at the tip.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun brown tree shrew having a naked tail bilaterally fringed with long stiff hairs on the distal third; of Malaysia
• noun brown tree shrew having a naked tail bilaterally fringed with long stiff hairs on the distal third; of Malaysia