Green’s Dictionary of Slang

1. (orig. Can. milit., also dewflicker, do-flicker, doflickerty, do-flicky, dooflickee, dooflinkus, duflickerty) any nameless small object, typically some form of gadget.

1871		Dly Appeal (Carson City, NE) 22 Apr. 22/3: The ‘Gold Wizzard’ [sic] has been around. He has a ‘dooflicker’ consisting of two rods of whalebone with a metallic ball on the end ansd the ball twists [...] where gold indications are strong.
1882		Cincinnati Enquirier (OH) 12 Aug. 10/7: Some litle discussion arose [...] about the extravassation of of blood in the right pectoralia and the peculiar position of the dewflicker on the dome of the diaphragm .
1883		Ottawa Free Trader (IL) 21 July 9/4: Dooflicker’s Ride. ‘Yes,’ said Mr Dooflicker, [...] I had some wild experiences when I was a locomotive engineer.
1891		Severance News (KS) 8 May 4/1: The bottom slips out of the doflicker and a thingumbob slips back just in time [etc].
1893		Electric Rev. 11 Mar. 56/2: [T]he parabola of the dewflicker got jammed hard to starboard, which, of course, caused the flopper to fall down on the mizzen reciprocal eccentricity gimmick.
1905		L. Pound ‘Dialect Speech in Nebraska’ in DN III:i 66: Indefinite expression applied to something, the name of which is not readily recalled [...] dooflinkus, dooflicker.
1910		Anadarko Dly Democrat 28 Mar. 1/1: Firmly, yet gently, pull the doflicker [...] put our foot on the dingfum that touches the thingumbob, press the sockdologer [...] and then yank the everlasting stuffing out of the whang-doodle.
1914		Ade ‘The New Fable of the Scoffer who Fell Hard’ in Ade’s Fables 242: ‘Let me see that Dewflicker a minute,’ said Mr. Pallzey, as he carelessly extracted a Mid-iron.
1914		J.C. Ruppenthal ‘A Word-List From Kansas’ in DN IV:ii 105: doflickerty, n. Any small article. Also duflickerty.
1941		in G. Legman Limerick (1953) 48: A cowhand way out in Seattle / Had a dooflicker flat as a paddle.
1970		F. Collymore Notes for Gloss. of Barbadian Dial. 409: Do-flicky. Any small tool or gadget.
1997–2002		Hope College ‘Dict. of New Terms’ 🌐 dooflickee n. A device used to control the video disc player in Van Wylen Library.

2. the foreskin.

1953

in Randolph & Legman Ozark Folksongs and Folklore (1992) II 677: His dooflicker’s long and his dornick is tall.