Spring Break, Spring Vacation, Spring Holiday
noun
You've seen 夏休み and 冬休み. If that isn't enough, you can see that this is a spring rest of some kind. That would be a spring break or spring vacation.
はるやすみ
The reading for 春 is the same as the one you learned with the kanji. The 休み part is the same as the vocab word 休み, which hopefully you can read! If you know those readings, you can read this too.
春休みには家族で日本に行く予定です。
We're planning to go to Japan with the family during spring break.
春休み中に本をたくさん読むつもりです。
I plan to read a lot of books during spring break.
春休みの間は、僕はずっとバイトをしてました。
I was working part-time throughout spring break.