Spring; the season after winter when flowers bloom and the weather warms.
春になると桜が一斉に咲く。
When spring comes, the cherry blossoms bloom all at once.
春の陽気で散歩に出かけた。
I went for a walk in the pleasant spring weather.
新しい学年は春に始まる学校が多い。
Many schools start the new academic year in spring.
An archaic/literary use meaning the New Year.
迎春の挨拶が年賀状に書かれていた（文語的表現）。
A New Year's greeting ('迎春') was written on the New Year's card (literary expression).
旧暦の春に祭りを行った地域もある。
There are regions that held festivals at the start of the lunar new year.
The prime or heyday of life; the peak period of one's prosperity or activity.
彼は仕事の春を迎え、次々と成功を収めた。
He entered the prime of his career and achieved success one after another.
作家としての春を感じる作品だ。
This work seems to show the author's heyday as a writer.
Adolescence; puberty — the period of life when one matures physically and mentally.
娘もようやく春を迎え、心身に変化が見られる。
My daughter is finally entering adolescence and shows physical and emotional changes.
思春期は心の揺れが大きい時期だ。
Puberty is a time of great emotional upheaval.
A euphemistic sense referring to sexual desire or romantic/sexual inclination.
彼は春の訪れを感じて、異性に興味を持ち始めたようだ（婉曲な表現）。
He seems to have felt the onset of romantic/sexual interest (a euphemistic expression).
古い文学では『春』が恋や情欲を象徴することがある。
In old literature, 'spring' sometimes symbolizes love or sexual desire.