brass: [OE] Related forms occur in one or two other Germanic languages (such as Middle Low German bras, which meant simply ‘metal’), but essentially brass is a mystery word, of unknown ancestry. Its association with ‘effrontery’ begins in the late 16th century, prefigured by Shakespeare’s ‘face of brass’ in Love’s Labours Lost 1580, and by the first instances of the use of the derived adjective brazen to mean ‘shameless’ (the underlying notion is probably of a face as hard as brass, and therefore unable to show shame). Brass ‘high-ranking people’, as in top brass, comes from brass hat [19], a derogatory slang term for a senior military officer with golden insignia on his cap.
brass (n.)
Old English br?s "brass, bronze," originally in reference to an alloy of copper and tin (now bronze), later and in modern use an alloy of two parts copper, one part zinc. A mystery word, with no known cognates beyond English. Perhaps akin to French brasser "to brew," because it is an alloy. It also has been compared to Old Swedish brasa "fire," but no sure connection can be made. Yet another theory connects it with Latin ferrum "iron," itself of obscure origin.
As brass was unknown in antiquity, use of the word in Bible translations, etc., likely means "bronze." The Romans were the first to deliberately make it. Words for "brass" in other languages (such as German Messing, Old English m?sling, French laiton, Italian ottone) also tend to be difficult to explain.
The meaning "effrontery, impudence" is from 1620s. Slang sense of "high officials" is first recorded 1899. The brass tacks that you get down to (1897) probably are the ones used to measure cloth on the counter of a dry goods store, suggesting precision. Slang brass balls "toughness, courage" (emphatically combining two metaphors for the same thing) attested by 1960s.
例文
1. " Brass " is slang for " money ".
「 brass 」は、「money」という用語のスラングである.
2.He once again raised his baton and brought in the brass .
彼は再びタクトを持ち上げ、銅管楽部を入れた。
3.They are available in polished brass ，antique brass or silver-plate.
これらにはダミー銅、古銅、銀めっきがあります。
4.Copper， brass and aluminium are separated and remelted for reuse.
銅、黄銅、アルミニウムは分類別に再溶融されて再利用される。
5.I felt loath to sully the gleaming brass knocker by handling it.