D defs.my
Entry 1 sense Webster, 1913

Michaelmas

· Mich·ael·mas · IPA /ˈmɪkəlməs/
01 n. The feast of the archangel Michael, a church festival, celebrated on the 29th of September. Hence, colloquially, autumn.
  1. 1.
    The feast of the archangel Michael, a church festival, celebrated on the 29th of September. Hence, colloquially, autumn.
Phrases & compounds
Michaelmas daisy — See under Daisy.