noun, noun or participle which takes 'suru'
Describes crying with convulsive breaths, often due to deep emotion. Can be used as a noun or with する to mean 'to sob'.
彼女は悲しみのあまりむせび泣きした。
She sobbed from overwhelming sadness.
むせび泣きが聞こえてきた。
I could hear sobbing.