Definition

Noun: A brass instrument is a musical instrument, specifically a wind instrument, that produces sound through the vibration of the player's lips against a cup-shaped or funnel-shaped mouthpiece. The sound resonates and is amplified within a tube, or body, typically made of brass. The pitch is controlled by the player's lip tension, breath, and, on most models, by valves or a slide that change the length of the tube's air column.

Examples of Usage

• The trumpet, trombone, and tuba are all classic examples of a brass instrument.
• The powerful sound of the brass instrument section is a defining feature of a marching band.
• To play a brass instrument well requires strong breath control and precise lip technique.

Advanced Usage

• "Brass" as a section: In an orchestra or band, the collective group of brass instruments is often referred to simply as "the brass."
  • The conductor asked the brass to play more softly during the delicate passage.
• Historical context: While modern brass instruments are made of brass, historical precursors were made from materials like animal horns, wood, or conch shells. The term "brass instrument" is defined by the method of sound production (lip vibration) rather than solely the material.

Variants and Related Words

• Brass (noun): The family or section of instruments (e.g., "The brass were too loud.").
• Brass player (noun): A musician who plays a brass instrument.
• Valve (noun): A mechanical device on many brass instruments (like trumpets and tubas) used to change pitch.
• Slide (noun): The movable U-shaped tube on a trombone used to change pitch.
• Mouthpiece (noun): The detachable part of the instrument into which the player blows.

Synonyms

• Wind instrument (specific type): A broader category that includes brass and woodwind instruments.
• Horn (colloquial): Often used informally to refer to brass instruments, especially in jazz contexts (e.g., "He's a great horn player.").

Related Phrases and Idioms

• To blow one's own horn/trumpet: To boast about one's own achievements. This idiom originates from the act of a herald announcing important news with a brass instrument.
  • He's always blowing his own trumpet about his sales figures.
• Brass neck/nerve (idiom): Shameless boldness or impudence. This is unrelated to the musical instrument but shares the word "brass."
  • He had the brass neck to ask for a raise after being late all week.

Noun

1. a wind instrument that consists of a brass tube (usually of variable length) that is blown by means of a cup-shaped or funnel-shaped mouthpiece