What is "winkles"

Usage examples of "winkles".

Emily wanted to stop for mussels and winkles at the shellfish stand, then for lemonade at a nearby cafe, claiming she was hungry and thirsty, and in a burst of willfulness she stamped her foot.

He was a descendant of the Van Winkles who figured so gallantly in the chivalrous days of Peter Stuyvesant, and accompanied him to the siege of Fort Christina.