Something that causes, contains, or presents danger.
the perils of the jungle (animals and insects, weather, etc.)
(insurance) An event which causes a loss, or the risk of a specific such event.
verb
(transitive) To cause to be in danger; to imperil; to risk.
And are we, Mr. President, who stood by our country then, who threw open our coffers, who bared our bosoms, who freely perilled all in that conflict, to be reproached with want of attachment to the Union?