the GNU version of the Collaborative International Dictionary of English
adj. Valued or sold at ten pence. See 2d penny, n.
adj. Denoting a size of nails. See 1st penny.
The Century Dictionary and Cyclopedia
Valued at or worth ten pence.
Word Usage
"I asked Papi why they are called tenpenny, eightpenny, an' sixpenny darters, an' he said it was 'cause they looked like nails an' that nails used to be sold by the pennyweight."