noun
spring season
A somewhat formal or written word for the season of spring, often used attributively in compounds such as 春季大会, 春季キャンプ, and 春季休暇.
春季大会は四月に開催される。
The spring tournament is held in April.
プロ野球の春季キャンプが沖縄で始まった。
Professional baseball spring training camp began in Okinawa.