"She's got a dirty streak on her fore topsail."

A few feet ahead of the black streak was a dirty red streak.

He brushed a gloved hand across his forehead, leaving a dirty streak in its wake.

All those dirty streaks as if he had been digging ?

We saved the dirty streaks on the tape for last.

He caught sight of a dirty streak of smoke rising in the cold morning air.

I can remember how it rained outside, and the rain made dirty streaks on the window-pane.

She curtseyed, folding the skirt to hide the dirty streak.

Tears filled Moony's eyes, fell and left a dirty streak against the screen.

A dirty green streak of fresh manure down the side of the first boy's face gave some clue as to the cause of the altercation.