This is the 7863rd most frequent Japanese word.
噴き出す
"To spout, gush, or burst out."
噴き出す indicates the physical gushing or spouting of water in this context.
地面から温泉が噴き出している場所を訪れた。
We visited a place where hot springs gush out from the ground.
噴き出す is used here to describe an eruption or spewing of lava by a volcano.
火山が噴き出して、周囲に溶岩を広げた。
The volcano erupted and spewed lava around.
噴き出す is used here to express the action of bursting into laughter suddenly.