What does the cryptic crossword clue "Male astride little horse in New Forest for instance (7)" mean?

The wordplay uses a container (one word inside another). PONY (synonym="little horse") in TOM (synonym="male") = TOPONYM The answer is TOPONYM.

Male astride little horse in New Forest for instance (7)

Independent Cryptic #11995 | 4 Down | 2025-03-20 flower