Thick-furred marsupial of the Americas with a hairless prehensile tail (7)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
opossum
(Other definitions for opossum that I've seen before include "American and Australian marsupial, often abbreviated" , "Small Australian marsupial" , "Small arboreal marsupial" , "Thickly furred marsupial" , "Native of America" .)