Flacker meaning
To flutter as a bird.
And the cherubins flackered with their wings. --Ezek. x. 19 (Coverdale's translation)
verb
Origin of flacker
- From Middle English flakeren (“to flutter, waver”), frequentative of Middle English flaken (“to move quickly back and forth”). Akin to Old Dutch flakkeren (“to flicker, waver”), German flackern (“to flare, flicker, flutter”), Icelandic flökra (“to flutter”), Icelandic flakka (“to rove about”), Old English flacor (“flying, fluttering”). See also flack, flicker.
From Wiktionary