Omphalos bowl
Glass Dictionary

(from Greek omphalos, “navel”) A bowl with a hollow, raised boss (the “navel”) at the center.
Alternate Spellings:
Omphalos bowls
omphalo bowl
omphalo bowls
Artwork Examples:
(from Greek omphalos, “navel”) A bowl with a hollow, raised boss (the “navel”) at the center.