dorPronunciation: /dɔː/ (also dor beetle)Definition of dor noun a large black dung beetle that makes a droning sound in flight and excavates burrows in which its young develop. Family Geotrupidae: several genera and species, including the common Geotrupes stercorarius Origin: Old English (denoting a bee or buzzing fly), probably imitativedor in other Oxford dictionaries Definition of dor in the US English dictionary