What does the cryptic crossword clue "Naughty child trapping worn out animal (5,3)" mean?

The wordplay uses an anagram. anagram of WORN (synonym="WORN") + BRAT (synonym="BRAT") = BROWNRAT The answer is BROWNRAT.

Naughty child trapping worn out animal (5,3)

Guardian Cryptic #29157 | 18 Down | 2023-08-24 flower