A modern spiritual and religious movement. / (music) Ellipsis of New Age music..

A restriction placed on an activity based on the age of the participants; either lower or higher limit.

(often capitalized) A modern spiritual and religious movement, covering a wide variety of alternative spiritual and philosophical ideas, that developed towards the end of the 20th century.

(often capitalized) Of or relating to the New Age movement. / Of or relating to New Age music.

(history) A period of time ranging from part of the 17ᵗʰ century through much of the 18ᵗʰ century, characterized particularly by the importance of logic and reason.

(idiomatic) A period of happiness, peace, prosperity, and/or great progress. / (mythology) The Golden Age.

the time of the Industrial Revolution

the period of life between youth and old age; midlife

of, or relating to middle age; neither old nor young

(historical) A historical period of great accomplishment in a field or a society, usually following, and not quite as favorable as, a golden age, and not unfavorable as an iron age.