The Collaborative International Dictionary
Amber seed
Amber seed \Am"ber seed`\ ([a^]m"b[~e]r s[=e]d`).
Seed of the Hibiscus abelmoschus, somewhat resembling
millet, brought from Egypt and the West Indies, and having a
flavor like that of musk; musk seed.
--Chambers.
Wiktionary
amber seed
n. The seed of the musk mallow, ''Abelmoschus moschatus'', formerly (taxlink Hibiscus abelmoschus species noshow=1), somewhat resembling millet; musk seed.