plural of bill of mortality

A dangerous and daring jump with possibly lethal outcome. / (figuratively) A risky, dangerous or crucial step or undertaking.

One who is not a god; a human being. / (idiomatic) An ordinary person, without special expertise or status.

plural of infant mortality

plural of mortal combat

An official statement of the number of deaths in a place or district within a given time. / A district required to be covered by such a statement.

Fighting to the death; a physical fight between persons or groups wherein each side is attempting to kill the other. / (by extension) Any very spirited competition between persons or groups.

plural of mortal sin

(archaeology, paleontology) The process by which individuals in a population die off one by one from a variety of causes (rather than in large numbers as part of a single event).

(archaeology, paleontology) The process by which individuals in a population die off in large numbers as part of a single event (rather than one by one, from a variety of causes).