plural of blue hour

The period of twilight when the Sun is approximately 4-8° below the horizon and the sky is within a range of blue colors.

Mercurial ointment.

(colour) Of a colour between blue and red; purple.

plural of blue screen

(film) The filmmaking technique of shooting foreground action against an evenly-lit monochromatic background for the purpose of removing the background from the scene and replacing it with a different image or scene.

(organic chemistry) The synthetic dye indigotin used to replace natural indigo

plural of blue belly

Alternative form of bluebelly

A mountainous region of New South Wales, Australia. / A small mountain range on Ellesmere Island, Nunavut, Canada.