1.verbTo make a groove, hole, or mark in by scooping with or as if with a gouge.
"Japanese and Chinese printers used to gouge characters in wood."
2.verbTo cheat or impose upon; in particular, to charge an unfairly or unreasonably high price.
"The company has no competition, so it tends to gouge its customers."
3.verbTo dig or scoop (something) out with or as if with a gouge; in particular, to use a thumb to push or try to push the eye (of a person) out of its socket.