The Collaborative International Dictionary
Myristica tingens
Mace \Mace\, n. [F. macis, L. macis, macir, Gr. ?; cf. Skr. makaranda the nectar or honey of a flower, a fragrant mango.] (Bot.) A kind of spice; the aril which partly covers nutmegs. See Nutmeg.
Note: Red mace is the aril of Myristica tingens, and white mace that of Myristica Otoba, -- East Indian trees of the same genus with the nutmeg tree.