What does the cryptic crossword clue "It arrives after November and it’s 13½ inches tall (5)" mean?

The definition is "It arrives after November and it’s 13½ inches tall". The wordplay uses a double definition. Double definition The answer is OSCAR.

It arrives after November and it’s 13½ inches tall (5)

Guardian Cryptic #29645 | 12 Across | 2025-03-18 flower