the box owned by the mythological figure Pandora, which released all the sorrows of mankind into the world when opened; it also contained the spirit Hope-see Pandora
Because of this it has gained a number of other meanings:
... who are 65 years of age or older. The median age is 41 years. For every 100 females there are 92.6 males. For every 100 females age 18 and over, there are 90.2 ...