dumbledore

noun4

1. •
   (dialect) A beetle, typically a cockchafer or dung beetle.
2. •
   (dialect) A dandelion.

   • The Dandelion has a number of common names in Newfoundland. These include Dumbledore, Faceclock, and Piss-a-beds. — 1975
3. •
   (slang) A blundering person.

   • “Miserable dumbledores!” / “Right, William, and so they be—miserable dumbledores!” said the choir with unanimity. — 1872
4. •
   (dialect, no longer used) A bumblebee.

   • 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 — — 1899

noun1

1. •
   A wise and kindly older male mentor, especially a wizard-like figure.

   • I inherited my uncle Dave's bad knees. I can only hope I inherited some of his writing skills as well. He is a wizard with words, the Dumbledore of poetry. — 2017