the season between spring and autumn, the warmest part of the year, in the N hemisphere the months of June, July, and August; = summertime
in astronomy, the period in the N hemisphere extending from the June solstice (longest day of the year) to the September equinox (time when day and night are of equal length)
a period of maturity
literary (usu in pl) a year
a girl of 17 summers
(used before a noun) of, during, or suitable for summer
a summer dress
summery adj
[Old English sumor]