Meanings

to gush out

to boil up

to gush forth (e.g. water from a spring)

to well (up)

to happen suddenly

gushing out

spring water

output

welling of water

those who seek riches will find them

to appear suddenly

bubbling spring

welling (up)

hydrothermal discharge zone

to breed (e.g. maggots)

to feel that something is true or actually happening

to tingle with excitement

(appearing) out of nowhere

upwelling