Definition of pentail

1 or less commonly pen-tailed tree shrew \ ˈ⸗ˌ⸗-​ \ : a tree shrew (genus Ptilocercus) of Malaysia and adjacent islands that is dark brown above and white below and has a naked tail bilaterally fringed with long stiff hairs on its distal third
2 or less commonly pen-tailed phalanger : a small New Guinea phalanger (genus Distoechurus) related to the mouse opossums but distinguished by a tail fringed with long hairs
3 [by alteration] : pintail sense 1

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History and Etymology for pentail

pen entry 3 + tail

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“Pentail.” Dictionary, Merriam-Webster, Accessed 7 Jun. 2020.

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