summer 1 noun 1 ( also Summer ) the warmest season of the year, between spring and autumn, extending from about June to August in the N hemisphere and from about December to February in the S hemisphere.
2 the warm sunny weather that is associated with summer a beautiful summer's day . See also Indian summer .
3 astron the period of the year between the summer solstice and the autumnal equinox (see under equinox ).
4 literary a time of greatest energy, happiness, etc; a heyday in the summer of her life .
5 ( usu summers ) old use, poetic a year, especially as thought of in terms of someone's age an old lady of ninety summers .
verb ( summered , summering ) 1 to pass the summer summered in Nice .
2 to put (livestock) to pasture for the summer summered their sheep on the hillside .
[Anglo-Saxon sumer ] summerlike or summery adjective .
summer 2 noun ( also summer-tree ) a horizontal load-bearing beam, especially one that supports the girders or joists of a floor or, less commonly, the rafters of a roof. [14c: from French sumer , from somier pack-horse or beam, from Greek sagma a pack-saddle]
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