Meaning

noun a common and long cultivated European herb from which most common garden pansies are derived

noun violet of Pacific coast of North America having white petals tinged with yellow and deep violet

noun common Old World viola with creamy often violet-tinged flowers

originFrom heart + -s- + ease: an infusion made from the plant is traditionally believed to cure lovesickness.

Etymology from Wiktionary, CC BY-SA 3.0