present participle of burn coal

present participle of burn the coal

present participle of burn bread

present participle of dump and burn

present participle of burn up

present participle of burn off

(New Age, counterculture) An event held annually in the western United States, focused on community, art, self-expression, and self-reliance.

plural of burning question

(idiomatic) An important and pertinent question that urgently requires an answer.

A large convex lens or concave mirror that can concentrate the sun's rays onto a small area, heating up the area and thus resulting in ignition of the exposed surface.