There are several synonyms for the term "big wind instrument" that are commonly used in the world of music. The most common of these synonyms is the word "brass instrument," which refers to any musical instrument made of brass and played by blowing into a mouthpiece. Other synonyms include "woodwind instrument," which is a type of wind instrument made from wood or metal, and "pipe instrument," which is a type of instrument that uses pipes to produce sound. Other synonyms for big wind instruments can include "horn," "trombone," "trumpet," and "tuba." These synonyms are often used interchangeably depending on the specific context and style of music being played.