What does the cryptic crossword clue "Rabid hounds that can be seen running through New York (6)" mean?

The definition is "that can be seen running through New York". The wordplay uses an anagram. Double definition The answer is HUDSON.

Rabid hounds that can be seen running through New York (6)

Guardian Cryptic #29089 | 12 Across | 2023-06-06 flower