The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

   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.
         [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Mace \Mace\ (m[=a]s), n. [Jav. & Malay. m[=a]s, fr. Skr.
   m[=a]sha a bean.]
   A money of account in China equal to one tenth of a tael;
   also, a weight of 57.98 grains. --S. W. Williams.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Mace \Mace\, n. [OF. mace, F. masse, from (assumed) L. matea, of
   which the dim. mateola a kind of mallet or beetle, is found.]
   1. A heavy staff or club of metal; a spiked club; -- used as
      weapon in war before the general use of firearms,
      especially in the Middle Ages, for breaking metal armor.
      --Chaucer.
      [1913 Webster]

            Death with his mace petrific . . . smote. --Milton.
      [1913 Webster]

   2. Hence: A staff borne by, or carried before, a magistrate
      as an ensign of his authority. "Swayed the royal mace."
      --Wordsworth.
      [1913 Webster]

   3. An officer who carries a mace as an emblem of authority; a
      macebearer. --Macaulay.
      [1913 Webster]

   4. A knobbed mallet used by curriers in dressing leather to
      make it supple.
      [1913 Webster]

   5. (Billiards) A rod for playing billiards, having one end
      suited to resting on the table and pushed with one hand.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Mace \Mace\, prop. n. [Trademark.]
   A chemical preparation containing tear gas in a solvent,
   packaged in the form of a spray, and used to temporarily
   incapacitate people, such as rioters or criminals, by causing
   intense eye and skin irritation; also called chemical mace.
   It is designed to be a non-lethal weapon for defending
   against violent people.
   [PJC] macebearer

WordNet (r) 3.0 (2006):

Mace
    n 1: (trademark) a liquid that temporarily disables a person;
         prepared as an aerosol and sprayed in the face, it
         irritates the eyes and causes dizziness and immobilization
         [syn: Mace, Chemical Mace]
    2: an official who carries a mace of office [syn: macebearer,
       mace, macer]
    3: spice made from the dried fleshy covering of the nutmeg seed
    4: a ceremonial staff carried as a symbol of office or authority

Moby Thesaurus II by Grady Ward, 1.0:

92 Moby Thesaurus words for "mace":
   armory, badge, badge of office, badges, bastinado, bat, baton,
   battering ram, billy, billy club, blackjack, blazonry, bludgeon,
   brassard, button, caduceus, cane, cap and gown, chain,
   chain of office, cheat, class ring, club, cockade, collar, con man,
   crook, crosier, cross, cross-staff, cudgel, decoration, diddler,
   dress, eagle, emblems, ensigns, fasces, ferule, figurehead,
   fleur-de-lis, flimflammer, gavel, gyp, hammer and sickle, heraldry,
   insignia, knobkerrie, lapel pin, life preserver, livery, mantle,
   markings, medal, morning star, mortarboard, mountebank, nightstick,
   old school tie, paddle, pin, portfolio, quarterstaff, ram, regalia,
   ring, rod, rod of office, rose, sandbag, scepter, school ring,
   shamrock, sharpie, shillelagh, sigillography, skull and crossbones,
   sphragistics, spontoon, staff, stave, stick, swastika, tartan,
   thistle, tie, truncheon, uniform, verge, wand, wand of office,
   war club



The Free On-line Dictionary of Computing (30 December 2018):

MACE

   A concurrent object-oriented language.


The Devil's Dictionary (1881-1906):

MACE, n.  A staff of office signifying authority.  Its form, that of a
heavy club, indicates its original purpose and use in dissuading from
dissent.