What does the cryptic crossword clue "Stole time off - for Christmas? (9)" mean?

The definition is "Christmas?". The wordplay uses an anagram. anagram of STOLE + TIME = MISTLETOE; definition: "Christmas?" The answer is MISTLETOE.

Stole time off - for Christmas? (9)

Guardian Cryptic #23330 | 9 Across | 2004-12-20 flower