Come learn 2000+ kanji and 6000+ vocabulary words with WaniKani.
noun, の adjective
A wound of your heart. That could be many things, but in this case it's heartbreak.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
He dumped me and I’m a little heartbroken, so I’m going on a trip to Paris to get over it.