A feeling of fondness or nostalgia for the past or something missed; warmly remembered and missed.
故郷の景色が懐かしくて、何度も写真を見返した。
I felt nostalgic for the scenery of my hometown and looked through the photos repeatedly.
子供のころに遊んだ公園が懐かしい。
I miss the park where I used to play as a child.
懐かしい歌を聞いて胸が熱くなった。
Hearing a nostalgic song warmed my heart.