nimbus, nimbus cloud, rain cloud - a dark gray cloud bearing rain

glowing, radiance, glow - the amount of electromagnetic radiation leaving or arriving at a point on a surface

botany, phytology - the branch of biology that studies plants

corolla - (botany) the whorl of petals of a flower that collectively form an inner floral envelope or layer of the perianth; "we cultivate the flower for its corolla"

plant part, plant structure - any part of a plant or fungus

arc, electric arc, electric discharge, spark, discharge - electrical conduction through a gas in an applied electric field

light, visible light, visible radiation - (physics) electromagnetic radiation that can produce a visual sensation; "the light was filtered through a soft glass window"

anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical structure; "he has good bone structure"

anatomy, general anatomy - the branch of morphology that deals with the structure of animals

cigar - a roll of tobacco for smoking