Definitions

1. noun

a container in a Jewish home where ashes from the Temple in Jerusalem are kept, a symbol of mourning and remembrance

“The family lit the lights and opened the aron and the kos to honor the memory of their ancestors.”

2. noun

a bowl, typically of wood, used for holding matzah during a Passover seder

“At the seder, everyone gathered around the table to hold their kos and break the matzah.”