godan verb (-ru), intransitive verb, expression
be emotionally moved; have a lump in one's throat
Describes a tight, choked feeling in the chest from strong emotion, often sadness, gratitude, or nostalgia. Used for moments that bring tears or make it hard to speak.
卒業式で友達のスピーチを聞いて胸が詰まった。
I got choked up listening to my friend's speech at the graduation ceremony.
久しぶりに故
Looking at photos of my hometown after so long, I felt a lump in my throat.