highgrade

adjective

of excellent or superior quality.

(of ore) yielding a relatively large amount of the metal for which it is mined.

verb (used with object)

to steal (rich ore) from a mine.

Origin:
1875–80

Related forms

high-grad·er, noun

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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WordNet

high-grade
adjective
surpassing in quality; "top-grade ore"

WordNet® 3.0, © 2006 by Princeton University.
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Relevant Questions

00:10

Highgrade is always a great word to know.

So is ninnyhammer. Does it mean:

a stew of meat, vegetables, potatoes, etc.

a fool or simpleton; ninny.

Example sentences from the web

Specialty, highgrade car wheels of magnesium alloy are called mag wheels.

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high-grade