The process of marking or spotting with flecks; also, a pattern or collection of flecks on a surface.
From 'fleck' + '-ing,' functioning as both a gerund (the action of marking) and a noun describing the visual result (a flecking pattern).
The word 'flecking' shows how '-ing' in English is wildly versatile—it can mean the action (the painting), the result (the pattern), or even a countable thing (add more flecking).
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