根据《牛津英语词典》和《美国传统英语词典》的词条，在古希腊，那些您可能在沙滩上看到的双壳贝被称为ostrakon。

According to both the Oxford English Dictionary and the American Heritage Dictionary, in ancient Greek the bivalve shells you might find at the beach were called ostrakon.

youdao

根据《美国传统词典》的说法，这个古希腊单词可以进一步追溯到印欧语——da的意思是“分开、分配”。

The deeper root of this Greek meaning is (according to the American Heritage Dictionary) Indo-European where da meant “to divide.”

youdao