(geology) A cone-shaped volcanic vent produced by the explosion of gas-filled magma.

The island of Taiwan / (historical) A province of the Qing (Ching) dynasty (Manchu). / A province of the Republic of China. / A claimed province of the People's Republic of China (mainland China).

A fundamental assumption or guiding belief. / A rule used to choose among solutions to a problem. / (sometimes pluralized) Moral rule or aspect.

In a proudish manner.