What is Gushing?

Gushing definition and meaning on Dictionary terms:
verb (used without object)
to flow out or issue suddenly, copiously, or forcibly, as a fluid from confinement: Water gushed from the broken pipe.
to express oneself extravagantly or emotionally; talk effusively: She gushed with pride over her new grandchild.
to have a sudden, copious flow, as of blood or tears.

verb (used with object)
to emit suddenly, forcibly, or copiously.

a sudden, copious outflow of a fluid.
the fluid emitted.

effusive and often insincere language or behavior.