SPECK

[noun] [C] - a very small mark, piece or amountCould you rub that speck off the window?These islands are so small, they're just specks on the map.After I'd painted the door, I found specks of paint all over the floor.There's not a speck of (= not any) dust/dirt in their house.There wasn't a speck of (= any) truth in what he told us.We could see a speck (= a small amount) of light at the end of the tunnel.