the warmest season of the year; in the northern hemisphere it extends from the summer solstice to the autumnal equinox
"they spent a lazy summer at the shore"
One of four seasons, traditionally the second, marked by the longest and typically hottest days of the year due to the inclination of the Earth and thermal lag. Typically regarded as being from June 21 to September 22 or 23 in parts of the USA, the months of June, July and August in the United Kingdom and the months of December, January and February in the Southern Hemisphere.
"The teacher asked a summer to solve the math problem on the board, but she realized they had misunderstood the instruction and meant someone who studies during school breaks."
A pack-horse.
A person who sums.
In plain English: Summer is the warmest season of the year when the days are long and it feels hot outside.
"The summer is finally here after weeks of cold rain."
To spend the summer, as in a particular place on holiday.
"We decided to rent a cabin by the lake so we could spend the summer there."
In plain English: To summer means to spend the summer season somewhere, usually for vacation.
"The heat seemed to summer over us all day long."
the hottest season of the year
"The sweltering heat of summer made it impossible to leave the house without sunscreen."
In plain English: Summer describes something that happens during the warmest part of the year when schools are closed and people go on vacation.
"The summer coat was too hot for the cool weather."
Usage: Use summer as an adjective to describe things that occur during or are characteristic of the warmest part of the year, such as in "a summer vacation." It is often interchangeable with seasonal terms like hot but specifically denotes timing rather than just temperature.
A female given name from English of modern usage, often given to girls born in summer.
"The new baby girl was named Summer because her parents wanted a traditional name that matched the season she arrived."
The word summer comes from Old English sumor, which traces its roots back to the Proto-Indo-European concept for "summer" or "year." It has been used in English since before the Middle English period to describe the warm season.