1. reeded - Adjective
2. reeded - Verb
Civered with reeds; reedy.
Formed with channels and ridges like reeds.
Source: Webster's dictionaryThe coin has a 0.069-inch (1.75-mm) reeded (or milled) edge. Source: Internet
The public could also debase coins, usually by clipping or scraping off small portions of the precious metal, also known as "stemming" (reeded edges on coins were intended to make clipping evident). Source: Internet