dumbledore

1. (dialectal, archaic, dated) A bumblebee.Examples: "Those slopes of fresh turf, embroidered with every minute blossom of the moor — thyme, birdsfoot, eyebright, and dwarf purple thistle, buzzed and hummed over by busy, black-tailed, yellow-banded dumbledores."; "A shaded lamp and a waving blind, / And the beat of a clock from a distant floor: / On this scene enter – winged, horned, and spined – / A longlegs, a moth, and a dumbledore —"; "Now and then a dumbledore or ‘busy bee’ as they are called by some, propelled itself across our path, they being extremely large and heavy this year."archaicdateddialectal

2. (dialectal) A beetle, typically a cockchafer or dung beetle.Examples: "others may need to be informd that a blastnashun straddlebob is a dumbledore, that is to say, a polyonymous lamellicorn coleopter, cald also a dorbeetle, a dorbug, a maybeetle, a maybug, a cockchafer, a Melolontha vulgaris."dialectal

3. (dialectal) A dandelion.Examples: "The Dandelion has a number of common names in Newfoundland. These include Dumbledore, Faceclock, and Piss-a-beds."dialectal

4. (slang) A blundering person.Examples: "“Miserable dumbledores!” / “Right, William, and so they be—miserable dumbledores!” said the choir with unanimity."slang