brush (redirected from brushing up)

brush¹

1. a device made of bristles, hairs, wires, etc., set into a firm back or handle: used to apply paint, clean or polish surfaces, groom the hair, etc

2. the bushy tail of a fox, often kept as a trophy after a hunt, or of certain breeds of dog

3. an electric conductor, esp one made of carbon, that conveys current between stationary and rotating parts of a generator, motor, etc

4. a dark brush-shaped region observed when a biaxial crystal is viewed through a microscope, caused by interference between beams of polarized light

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brush²

1. a thick growth of shrubs and small trees; scrub

2. land covered with scrub

3. broken or cut branches or twigs; brushwood

4. wooded sparsely populated country; backwoods

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brush [brəsh]

(ecology)

tropical scrub

(electricity)

A conductive metal or carbon block used to make sliding electrical contact with a moving part.