noun
a period of unusually warm weather in the autumn
• Syn: ↑Indian summer
• Hypernyms: ↑time period, ↑period of time, ↑period
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nounUsage: usually capitalized S&M
: Indian summer when occurring in November
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mild, warm weather similar to Indian summer, occurring in November.
[1585-95; from the occurence of such weather around the feast of St. Martin, celebrated on November 11]
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Saint Martin's summer,
= St. Martin's summer. (Cf. ↑St)
Useful english dictionary. 2012.