the GNU version of the Collaborative International Dictionary of English
n. A costermonger.
The Century Dictionary and Cyclopedia
n. Same as costermonger.
Word Usage
"As varieties of the Apple, mention is made in documents of the twelfth century, of the pearmain, and the costard, from the latter of which has come the word costardmonger, as at first a dealer in this fruit, and now applied to our costermonger."