A splodge is an irregular blot of colour. A splodge of paint, splodges of ink, a great splodge.
It is British and informal, and splotch is the American form of the same word. The sound does the work, as it does in splash and splat, which is why nobody needs it explained.
1nounsplodgeAn irregular blot of colour.
“There was a big splodge of red paint on the carpet where the pot had tipped over.”
splodge is a blot.
Also accepted in games: splotch, blotch
Probably a variant of splotch, with the sound suggesting the shape.
Probably a variation of splotch.
Etymology from Wiktionary, CC BY-SA