What does the cryptic crossword clue "Rod detailed breaking in to expose himself to mother hen recently? (9)" mean?

The wordplay uses a deletion. BATO (synonym="BATO") in INCUR (synonym="=to expose himself to, e.g. expense") = INCUBATOR The answer is INCUBATOR.

Rod detailed breaking in to expose himself to mother hen recently? (9)

Independent Cryptic #11677 | 19 Across | 2024-03-14 flower