The practice of pruning plants during the growing season.

summer fallow

Alternative spelling of summerhouse

(Canada, US) A cottage rented out in the summer to vacationers.

A resort visited for holidays/vacations during the summer.

summer fallow

The summer of 1967, noted for its love-ins and the flourishing of the hippie movement.

A stretch of sunny and warm, often hazy, days during late autumn. / (figuratively) The late autumn of life; a late flowering of activity before old age.

(Britain) daylight saving time

(astronomy) The moment when the Earth is in that point of its orbit where the northern or southern hemisphere is most inclined toward the sun.