A merchant who sells men's clothing WordNet 3.0 & Open English WordNet

In British English, a haberdasher is a business or person who sells small articles for sewing, dressmaking and knitting, such as buttons, ribbons, and zippers; in the United States and Canada, the term refers instead to a retailer who sells men's clothing, including suits, shirts, and neckties. Wikipedia

A person who makes or sells cloth or clothing. Wiktionary

A dealer in ribbons, buttons, thread, needles and similar sewing goods. Wiktionary

Ribbons, buttons, thread, needles and similar sewing goods sold in a haberdasher's shop. Wiktionary