After dance, Dorothy finds spot on dress

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1874, from polka (n.) + dot (n.). Named for the dance, for no reason except its popularity, which led to many contemporary products and fashions taking the name. Related: Polka-dotted (1873).

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM OTHER ENTRIES ▪ Kate's shirt was green with purple polka dots. EXAMPLES FROM CORPUS ▪ A perennial favourite, the polka dot gets a new lease of life in bold emerald green and brilliant white. ▪ Seven minutes later the princess, dressed ...

Wikipedia Word definitions in Wikipedia
Polka dot is a pattern consisting of an array of filled, large in size, circles . It differentiates itself from the spot pattern, as Polka dots are perfectly even and sized, while spots are irregular in spacing and shape. Early instances were generally ...

WordNet Word definitions in WordNet
n. design consisting of a pattern of regularly spaced circular spots

Wiktionary Word definitions in Wiktionary
n. Any of a number of uniform round dots, repeated to make a regular geometric pattern on a fabric