The term "barrel slat" refers to the narrow wooden pieces that make up the walls of a wooden barrel. Synonyms for this term include stave, plank, lathe, board, and strip. These terms are used interchangeably to describe the individual wooden pieces that are used to construct barrels. They are typically made from high-quality, tightly-grained wood, such as oak, and are used to create a tight, sturdy barrier that can hold liquids like wine, whiskey, and beer. Barrel slats are an important component of barrel-making and play a critical role in determining the quality and flavor of the final product.