Denim

Denim, in American usage since the late eighteenth century, denotes a rugged cotton twill textile, in which the weft passes under two (twi- "double") or more warp fibers, producing the familiar diagonal ribbing identifiable on the reverse of the fabric, which distinguishes denim from cotton duck. A popular conception of the etymology of the word denim is that it is a contraction or derivative of the French term, serge de Nîmes. Denim was traditionally colored blue with indigo dye to make blue "jeans," though "jean" then denoted a different, lighter cotton textile; the contemporary use of jean comes from the French word for Genoa, Italy (Gênes), from which the first denim trousers were made.

A similarly woven traditional American cotton textile is the diagonal warp-striped hickory cloth that was once associated with railroadmen's overalls, in which blue or black contrasting with undyed white threads form the woven pattern. Hickory cloth was characterized as being as rugged as hickoryAmerican Civil War.

The word dungarees, to identify heavy cotton pants such as overalls can be traced to a thick cotton country-made cloth, Dongari Kapar, which was sold in the quarter contiguous to the Dongari Killa, the fort of what was then known as Bombay (Hobson Johnson Dictionary). The word entered English with just this meaning in 1696 (OED). Dongri Fort was rebuilt in 1769 as Fort George, Bombay, where the first cotton mill was established in 1854. Dyed in indigo, the traditional cloth was used by Portuguese sailors and cut wide so that the legs could be swiftly rolled up when necessary. Thus, dungarees have a separate history.