In a rife or widespread manner.

Quality of being rife.

(military) A trench for sheltering sharpshooters.

plural of rifle pit

Any of the Elmidae, a family of beetles in the superfamily Byrrhoidea.

A feature of some volcanoes, especially the shield volcanoes of Hawaii, in which a linear series of fissures in the volcanic edifice allows lava to erupt from the volcano's flank instead of from its summit.

Any insect in the family Veliidae, aquatic true bugs related to the water striders.

plural of riffle bug

(US, dialect, intransitive) To succeed; to overcome obstacles.

plural of Riffian