From Longman Dictionary of Contemporary Englishboogerboog‧er /ˈbʊɡə, ˈbuː- $ -ər/ noun [countable] American English informal HBHDCBa thick piece of mucus from your nose
Examples from the Corpus
booger• Ben took my magazine home with him - the little booger!• We got to install an Indwelling Curiosity Cutout in some nosy booger.• Surreptitiously, I stuck boogers on the ends of my fingertips and then tossed them on to the third rail of the subway.• Small-time politics, you can hide the boogers.• It was enough to fry your brain, to sizzle the boogers in your snout.• For years we thought those were boogers on his shirt.Origin booger (1800-1900) boogie “booger” ((19-20 centuries)), from bogey ((19-21 centuries)). 