the GNU version of the Collaborative International Dictionary of English
adj. Costing or worth three pence; hence, worth but little; poor; mean.
The Century Dictionary and Cyclopedia
Worth three pence only; hence, of little worth.
n. Same as threepence, 1.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. of trifling worth
adj. used of nail size; 1 1/8 in long
Word Usage
"The name of the small silver threepenny coin, known as the threepenny joey or just joey, had the origin in another small coin, a fourpenny piece or groat."