The Collaborative International Dictionary of English v.0.48:

Roman \Ro"man\, a. [L. Romanus, fr. Roma Rome: cf. F. romain.
   Cf. Romaic, Romance, Romantic.]
   1. Of or pertaining to Rome, or the Roman people; like or
      characteristic of Rome, the Roman people, or things done
      by Romans; as, Roman fortitude; a Roman aqueduct; Roman
      art.
      [1913 Webster]

   2. Of or pertaining to the Roman Catholic religion;
      professing that religion.
      [1913 Webster]

   3. (Print.)
      (a) Upright; erect; -- said of the letters or kind of type
          ordinarily used, as distinguished from Italic
          characters.
      (b) Expressed in letters, not in figures, as I., IV., i.,
          iv., etc.; -- said of numerals, as distinguished from
          the Arabic numerals, 1, 4, etc.
          [1913 Webster]

   Roman alum (Chem.), a cubical potassium alum formerly
      obtained in large quantities from Italian alunite, and
      highly valued by dyers on account of its freedom from
      iron.

   Roman balance, a form of balance nearly resembling the
      modern steelyard. See the Note under Balance, n., 1.

   Roman candle, a kind of firework (generally held in the
      hand), characterized by the continued emission of shower
      of sparks, and the ejection, at intervals, of brilliant
      balls or stars of fire which are thrown upward as they
      become ignited.

   Roman Catholic, of, pertaining to, or the religion of that
      church of which the pope is the spiritual head; as, a
      Roman Catholic priest; the Roman Catholic Church.

   Roman cement, a cement having the property of hardening
      under water; a species of hydraulic cement.

   Roman law. See under Law.

   Roman nose, a nose somewhat aquiline.

   Roman ocher, a deep, rich orange color, transparent and
      durable, used by artists. --Ure.

   Roman order (Arch.), the composite order. See Composite,
      a., 2.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Roman candle
    n 1: a cylindrical firework that projects a series of colored
         balls of fire

Moby Thesaurus II by Grady Ward, 1.0:

87 Moby Thesaurus words for "Roman candle":
   aid to navigation, alarm, amber light, balefire, beacon,
   beacon fire, bell, bell buoy, blinker, blue peter, bomb, buoy, cap,
   caution light, cherry bomb, cracker, firecracker, flare, flowerpot,
   fog bell, fog signal, fog whistle, foghorn, girandole, glance,
   go light, gong buoy, green light, heliograph, high sign,
   international alphabet flag, international numeral pennant, kick,
   ladyfinger, leer, marker beacon, nod, nudge, parachute flare,
   pilot flag, pinwheel, poke, police whistle, quarantine flag,
   radio beacon, red flag, red light, rocket, sailing aid, semaphore,
   semaphore flag, semaphore telegraph, serpent, sign, signal,
   signal beacon, signal bell, signal fire, signal flag, signal gong,
   signal gun, signal lamp, signal light, signal mast, signal post,
   signal rocket, signal shot, signal siren, signal tower, skyrocket,
   snake, spar buoy, sparkler, squib, stop light, the nod, the wink,
   torpedo, touch, traffic light, traffic signal, watch fire,
   white flag, wigwag, wigwag flag, wink, yellow flag