sum·mer 1 (s?m??r)n.1. a. In the Northern Hemisphere, the usually warmest season of the year, occurring between spring and autumn and constituting June, July, and August. In the Southern Hemisphere, it constitutes December, January, and February.b. The season extending from the summer solstice to the autumnal equinox.2. A period of fruition, fulfillment, happiness, or beauty.3. A year: a girl of 13 summers.v. sum·mered, sum·mer·ing, sum·mers v.tr. To lodge or keep during the summer: summered the herd in the south meadow.v.intr. To pass the summer: They summered at a beach resort.adj.1. Relating to or occurring in summer: summer heat; summer attire.2. Grown during the season of summer: summer crops.[Middle English sumer, from Old English sumor; see sem- in Indo-European roots.]sum?mer·ly adv. & adj.sum·mer 2 (s?m??r)n.1. A heavy horizontal timber that serves as a supporting beam, especially for the floor above.2. A lintel.3. A large, heavy stone usually set on the top of a column or pilaster to support an arch or lintel.[Middle English, beam, pack animal, from Anglo-Norman sumer, from Vulgar Latin *saum?rius, from Late Latin sagm?rius, pertaining to a packsaddle, packhorse, from sagma, packsaddle; see sumpter.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.summer (?s?m?) n1. (Physical Geography) (sometimes capital) a. the warmest season of the year, between spring and autumn, astronomically from the June solstice to the September equinox in the N hemisphere and at the opposite time of year in the S hemisphereb. (as modifier): summer flowers; a summer dress. aestival2. (Physical Geography) the period of hot weather associated with the summer3. a time of blossoming, greatest happiness, etc4. chiefly poetic a year represented by this season: a child of nine summers. vb5. (intr) to spend the summer (at a place)6. (Agriculture) (tr) to keep or feed (farm animals) during the summer: they summered their cattle on the mountain slopes. [Old English sumor; related to Old Frisian sumur, Old Norse sumar, Old High German sumar, Sanskrit sam? season] ?summerless adj ?summer-?like adj ?summerly adj, adv ?summery adj ?summeriness nsummer (?s?m?) n1. (Architecture) Also called: summer tree a large horizontal beam or girder, esp one that supports floor joists2. (Architecture) another name for lintel3. (Architecture) a stone on the top of a column, pier, or wall that supports an arch or lintel[C14: from Anglo-Norman somer, from Old French somier beam, packhorse, from Late Latin sagm?rius (equus) pack(horse), from sagma a packsaddle, from Greek]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014sum?mer1 (?s?m ?r) n. 1. the warm season between spring and autumn, in the Northern Hemisphere from the June solstice to the September equinox, and in the Southern Hemisphere from the December solstice to the March equinox. 2. hot, usu. sunny weather. 3. the hotter half of the year (opposed to winter). 4. the period of greatest development, perfection, beauty, etc.: the summer of life. 5. a year: a girl of fifteen summers. adj. 6. of or characteristic of summer. 7. suitable for or done during the summer: summer sports. v.i. 8. to spend or pass the summer. v.t. 9. to keep, feed, or manage during the summer: to summer sheep in high pastures. [before 900; Middle English sumer, Old English sumor, c. Old Frisian sumur, Old Saxon, Old High German, Old Norse sumar; akin to Skt sam? half-year, year, Old Irish sam-, Welsh haf summer] sum?mer?less, adj. sum?mer?like, sum?mer?ly, adj. sum?mer2 (?s?m ?r) n. 1. a principal beam or girder, as one used to support joists. 2. a stone laid upon a pier, column, or wall, from which one or more arches spring. 3. a beam or lintel. [1275?1325; Middle English somer Summer is the season between spring and autumn.If you want to say that something happens every year during this season, you say that it happens in summer or in the summer.Be Careful!Don’t say that something happens ‘in the summers’ or ‘in summers’.