Webster’s Revised Unabridged Dictionary · 1913
Dor
Dor (dôr), n. [Cf. AS. dora drone, locust, D. tor beetle, L. taurus a kind of beetle. Cf. Dormouse.] (Zoöl.) A large European scaraboid beetle (Geotrupes stercorarius), which makes a droning noise while flying. The name is also applied to allied American species, as the June bug. Called also dorr, dorbeetle, or dorrbeetle, dorbug, dorrfly, and buzzard clock.
Dor, n. [Cf. Dor a beetle, and Hum, Humbug.] A trick, joke, or deception. Beau. & Fl.
To give one the dor, to make a fool of him. [Archaic] P. Fletcher.
Dor, v. t. To make a fool of; to deceive. [Obs.] [Written also dorr.] B. Jonson.