A small marine mollusk with a spiral shell, often found on rocky shores. The children collected periwinkles from the tide pools during their beach outing.
A plant of the genus Vinca, often with blue or purple flowers, used as ground cover. The garden was filled with periwinkle, adding a splash of color to the landscape.
A color that is a pale tint of blue or purple, resembling the flower of the periwinkle plant. She chose a periwinkle dress for the wedding, which complemented her complexion beautifully.