nutmeg

n. hard aromatic seed of an East Indian tree which is grated and used as a spice; evergreen East Indian tree on which the nutmeg seed grows

The nutmegs Myristica are a genus of evergreen trees indigenous to tropical southeast Asia and Australasia. They are important for two spices derived from the fruit, nutmeg and mace. Nutmeg is the actual seed of the tree, roughly egg-shaped and about 20–30 mm long and 15–18 mm wide, and weighing between 5 and 10 grams dried, while mace is the dried "lacy" reddish covering or arillus of the seed. Several other commercial products are also produced from the trees, including essential oils, extracted oleoresins, and nutmeg butter (see below).
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Noun
1. East Indian tree widely cultivated in the tropics for its aromatic seed; source of two spices: nutmeg and mace
(synonym) nutmeg tree, Myristica fragrans
(hypernym) spice tree
(member-holonym) Myristica, genus Myristica
2. hard aromatic seed of the nutmeg tree used as spice when grated or ground
(hypernym) spice
(substance-holonym) mace
(part-holonym) nutmeg tree, Myristica fragrans

(n.)
The kernel of the fruit of the nutmeg tree (Myristica fragrans), a native of the Molucca Islands, but cultivated elsewhere in the tropics.
  

The oval, brown, wrinkly seed of the nutmeg tree. It is grated to spice up both sweet and savory dishes. You can find it in cakes, custards, souffles, as well as meatballs and soups.