knullerEtymologyAlteration of knoller (“one who rings a bell”), from the practice of chimney sweeps going door to door, ringing on doorbells.knuller means A chimney sweep who solicited work by ringing a bell. Lexicurio rates it Sui generis — a strength score of 89 out of 100.nounA chimney sweep who solicited work by ringing a bell.