Brass-instrument
a musical wind instrument of brass or other metal with a cup-shaped mouthpiece, as the trombone, tuba, French horn, trumpet, or cornet.
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- Brass-knuckles  a band of metal with four holes that fits over the upper fingers and that is gripped when a fist is made, used for increasing the effect of a blow with the fist. Historical Examples Andersonville, complete John McElroy Andersonville, Volume 2 John McElroy 
- Brass-monkey  brass monkey Historical Examples The Ocean Cat’s Paw George Manville Fenn And Then the Town Took Off Richard Wilson The Story Girl Lucy Maud Montgomery The Boy Scouts in A Trapper’s Camp Thornton W. Burgess Plowing On Sunday Sterling North The Journal of a Disappointed Man Wilhelm Nero Pilate Barbellion The Patrol of the Sun […] 
- Brass-ring  wealth, success, or a prestigious position considered as a goal or prize: Few of those who reach for the brass ring of the Presidency achieve it. the opportunity to try for such a prize. A chance to achieve wealth or success; a prize or reward. For example, “As a businessman he let the brass ring […] 
- Brass--rubbing  an antiquarian’s technique for copying designs from incised brass memorial slabs and the like. a copy made by brass-rubbing. Compare rubbing (def 2). noun the taking of an impression of an engraved brass tablet or plaque by placing a piece of paper over it and rubbing the paper with graphite, heelball, or chalk an impression […] 
- Brass-tacks  the most fundamental considerations; essentials; realities (usually used in the phrase get down to brass tacks). plural noun (informal) basic realities; hard facts (esp in the phrase get down to brass tacks) 
