The garment known for its simple shape and short sleeves is named for its resemblance to the capital letter “T.” When laid flat, the outline created by the body and sleeves closely approximates the shape of this letter. This visual characteristic is the defining attribute behind its designation.
This straightforward nomenclature reflects the garment’s utilitarian design and widespread adoption. Its simplicity and ease of manufacture contributed to its popularity as both underclothing and outerwear. The ease of recognition associated with its name further facilitated its assimilation into everyday language and commerce.