__ A. Bank (menswear retailer)

JOS

["This men's clothing brand shares its name with a common nickname for someone named Joseph and was founded in New York over a century ago."]

This clue is a straightforward abbreviation puzzle. "Bank" hints at a riverbank, and "Jos" is short for Josiah, but here it refers to Jos. A. Bank, a well-known American retailer specializing in men’s formal wear and suits. The clue plays on the retailer’s full name while keeping the answer concise.