Noun
getting a lump in one's throat; overflowing with feelings
see 胸がいっぱいになる
我々は殺人者に対する怒りで胸一杯になった。We were filled with anger against the murderer. Noun which may take the genitive case particle 'no'
chest full of; lungs full of
Also written 胸一杯【むねいっぱい】