What is "polka dot"?

Polka dot is a pattern consisting of equally spaced circles or dots on a solid background. The dots can be of different sizes, colors, and spacing, and are usually round. The polka dot pattern has been popular in fashion since the 19th century and has been used in various garments, such as dresses, skirts, and blouses. It is a versatile pattern that can be dressed up or down depending on the occasion and the size of the dots. The name "polka" is derived from the popular dance of the same name, which was popular in the mid-19th century and was known for its lively and playful movements, just like the pattern itself.