noun, noun or participle which takes 'suru', intransitive verb
overflow; spill over
Used for liquids or abstract things exceeding capacity and flowing over. Can be used literally (water overflowing) or figuratively (crowds, emotions).
大雨で川が溢流した。
The river overflowed due to heavy rain.
会場から人が溢流している。
People are spilling out of the venue.