"Heave that muck overboard," he ordered some of those who stood idling in the waist.
Now he was not only hopelessly down in the muck of poverty, but hopelessly dishonored.
Nae muck le o' that, but a douce, good-humored lassie for a' that.
They are too pure to have a market value; they contain no muck.
Muck or pond dirt could be used in the same way, in place of manure.