not always possible to know exactly what is in another persons mind, but I can't imagine the word milled to be open to much personal interpretation. Ivo is exceptionally good with the English language, so I think he was implying the sort of feature that is found on the edge of coins.
Regret this sort of glass not remotely my scene, so can't help, but the first thing that struck me about the round berries was that they reminded me of yew berries, and birds do eat such things I believe.