in fortification, all sorts of works that cover and defend the opposite posts, as flanks, casements, parapets, and faussebrays. See **FORTIFICATION**.

**Line of Defence**, a supposed line drawn from the angle of the curtain; or from any other part in the curtain, to the flanked angle of the opposite bastion. See **FORTIFICATION**.

**DEFENDER of the faith**, a peculiar title, belonging to the king of Great Britain, as Catholic does to the king of Spain, Christian to the king of France, &c.

This title was first given by pope Leo X. to king Henry VIII., for writing against Luther.