From Longman Dictionary of Contemporary Englishdandeliondan‧de‧li‧on /ˈdændəlaɪən/ noun [countable] 
HBPHBPa wild plant with a bright yellow flower which later becomes a white ball of seeds that are blown away in the wind
HBPHBPa wild plant with a bright yellow flower which later becomes a white ball of seeds that are blown away in the windExamples from the Corpus
dandelion• Today that team breaks up and scatters to the winds like a dandelion.• Yes, curlier even than Derek Johnstone's big dandelion noggin.• The melody suggests innocence, butterflies, dandelions bobbing in the breeze.• Weeds are rampant everywhere, dandelions, nettles, dock leaves, rose-bay willow-herb, wild roses, brambles.• For a start, try leaves of lime, poplar, sycamore, holly, dandelion and groundsel.• At the moment it looks more like a bit of rough pasture ... full of dandelions and clover patches.• It seems, like the dandelions in spring, to be the natural order of things.• Transfer to a serving bowl or to individual salad plates and garnish with dandelion, arugula or lettuce.Origin dandelion (1400-1500) French dent de lion “lion's tooth” (because of the shape of the leaves) 