noun
spring
A1
Frühling means 'spring' (season). It's a masculine noun: der Frühling, plural Frühlinge. Common everyday term, often used with preposition im Frühling (in spring). Genitive des Frühlings. Largely synonymous with Frühjahr, though Frühjahr is more formal or used in compounds in German.
Examples
Der Frühling beginnt im März.
Spring begins in March.
Im Frühling ist es warm.
It's warm in spring.
Im Frühling blühten die Bäume, weil die Temperaturen wärmer wurden.
In spring the trees bloomed because the temperatures became warmer.
Details
Mnemonics
picture blossoms and the word 'Frühling' on a calendar
think 'early-thing' — Früh- = early, -ling season
der Frühling — imagine a masculine sun (der) heralding spring
Notes
Masculine noun. Plural 'Frühlinge' is possible but often unneeded.