1. Plural of newmarket: a close-fitting jacket or coat, typically worn for riding or formal occasions.
Usage: chiefly historical; often capitalized when referring to the town of Newmarket, England, famous for horse racing
2. Plural of newmarket: a card game in which players bet on cards.
Usage: informal; dated

Examples

• The riders wore newmarkets tailored from fine wool.
• In the 19th century, newmarkets were fashionable among the upper classes.
• The collection featured several vintage newmarkets from the Victorian era.
• She inherited a trunk of old newmarkets from her grandmother.
• The tailor specialized in making newmarkets for equestrian events.