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Definition of rubra

"rubra" is probably misspelled. Trying rubber instead Definition of rubber

1. rubber [ n ] latex from trees (especially trees of the genera Hevea and Ficus)

Used in print:

(William S. Haymond, "Is Distance an Original...)

( 1 ) When an object was placed in the patient 's hand , he had no difficulty determining whether it was warm or cold , sharp or blunt , rough or smooth , flexible , soft , or hard ; and he could tell , simply by the feel of it , whether it was made of wood , iron , cloth , rubber , and_so_on .

(Robert A. Futterman, The Future of Our Cities....)

The big factories which are relatively near the centers of our cities - the rubber factories in Akron , Chrysler 's Detroit plants , U._S._Steel 's Pittsburgh works - often began on these sites at_a_time when that was the edge of the city , yet close to transport ( river ) , storage ( piers ) and power ( river ) .

Synonyms rubber caoutchouc gum_elastic India_rubber Related Terms latex foam_rubber synthetic_rubber cold_rubber hard_rubber Para_rubber crepe_rubber rubberize

2. rubber [ a ] made of rubber and therefore water-repellent
Examples: "rubber boots"

Synonyms rubber rubberised rubberized Related Terms impermeable

3. rubber [ n ] contraceptive device consisting of a thin rubber or latex sheath worn over the penis during intercourse

Synonyms rubber safety safe prophylactic condom Related Terms contraceptive

4. rubber [ v ] coat or impregnate with rubber
Examples: "rubberize fabric for rain coats"

Synonyms rubber rubberise rubberize Related Terms coat

5. rubber [ a ] returned for lack of funds
Examples: "a rubber check" "a no-good check"

Synonyms no-good rubber Related Terms colloquialism bad

6. rubber [ n ] an eraser made of rubber (or of a synthetic material with properties similar to rubber); commonly mounted at one end of a pencil

Synonyms rubber pencil_eraser rubber_eraser Related Terms eraser pencil

7. rubber [ n ] a waterproof overshoe that protects shoes from water or snow

Synonyms galosh golosh rubber gumshoe arctic Related Terms overshoe

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