What does the cryptic crossword clue "She cleans out for the steward (9)" mean?

The definition is "steward". The wordplay uses an anagram. anagram of SHE + CLEANS = SENESCHAL; definition: "steward" The answer is SENESCHAL.

She cleans out for the steward (9)

Guardian Cryptic #25605 | 15 Down | 2012-04-09 flower