D defs.my
Entry 1 sense Webster, 1913

Martinmas

· Mar·tin·mas · IPA
01 n. The feast of St. Martin, the eleventh of November; -- often called martlemans.
  1. 1.
    The feast of St. Martin, the eleventh of November; -- often called martlemans.(Eccl.) Also: martlemans
Phrases & compounds
Martinmas summer — a period of calm, warm weather often experienced about the time of Martinmas; Indian summer.