What does the cryptic crossword clue "What's left after boar's been butchered (4,5)" mean?

The wordplay uses an anagram. anagram of BOAR'S + BEEN = BAREBONES The answer is BAREBONES.

What's left after boar's been butchered (4,5)

Daily Mail Cryptic #16374 | 7 Down | 2020-08-05 flower