shuck

1) The outer husk or shell of the walnut, chestnut, &c.; or the husk of Indian corn. In England, the word is applied to pods as well as husks; as, pea-shucks. Not worth shucks, is a Southern expression meaning good for nothing.

If them thar is all he's got to offer, he aint worth shucks; and if you don't lick him, you aint worth shucks, neither.--Robb, Squatter Life.

They had three or four hounds, and one great big yellow cow, what wasn't worth schuks to trail.--Maj. Jones's Courtship, p. 48.

2) Quit; rid. To be shut of, or to get shut of, signifies to be or to get rid of. We also say, to be or get shot of. The expression is common in England.

Do you call those houzen--those things that have stoops to them?" as he saw here and there a log cabin or unpainted hut, such as abound in the sparsely settled regions of the South. "They pass for houses hereabouts," replied Mr. S----, "though the original owners have generally contrived to get shut of them and gone coon-hunting to the Mississippi."--Letter in N. Y. Journal of Commerce.