Unshod, poor explorer of North America (6)
I believe the answer is:
hudson
'explorer of north america' is the definition.
The definition and answer can be both natural objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'unshod poor' is the wordplay.
'poor' is an anagram indicator.
'unshod' with letters rearranged gives 'HUDSON'.
Can you help me to learn more?
(Other definitions for hudson that I've seen before include "New York river; Upstairs/ Downstairs butler" , "River in New York city" , "NY river; Canadian Bay" , "ROCK] a > banker" , "Large bay in Canada" .)