What does the cryptic crossword clue "One likely to whine, produce howl or jabber? (5)" mean?

The definition is "One likely to whine, produce howl / jabber?". The wordplay uses a double definition. Double definition The answer is BOXER.

One likely to whine, produce howl or jabber? (5)

Times Cryptic #28721 | 13 Across | 2023-09-29 flower