The Collaborative International Dictionary of English v.0.48:

Pennyroyal \Pen`ny*roy"al\, n. [A corruption of OE. puliall
   royal. OE. puliall is ultimately derived fr. L. puleium, or
   pulegium regium (so called as being good against fleas), fr.
   pulex a flea; and royal is a translation of L. regium, in
   puleium regium.] (Bot.)
   An aromatic herb (Mentha Pulegium) of Europe; also, a North
   American plant (Hedeoma pulegioides) resembling it in
   flavor.
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   Bastard pennyroyal (Bot.) See Blue curls, under Blue.
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The Collaborative International Dictionary of English v.0.48:

Pudding \Pud"ding\, n. [Cf. F. boudin black pudding, sausage, L.
   botulus, botellus, a sausage, G. & Sw. pudding pudding, Dan.
   podding, pudding, LG. puddig thick, stumpy, W. poten, potten,
   also E. pod, pout, v.]
   1. A species of food of a soft or moderately hard
      consistence, variously made, but often a compound of flour
      or meal, with milk and eggs, etc.
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            And solid pudding against empty praise. --Pope.
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   2. Anything resembling, or of the softness and consistency
      of, pudding.
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   3. An intestine; especially, an intestine stuffed with meat,
      etc.; a sausage. --Shak.
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   4. Any food or victuals.
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            Eat your pudding, slave, and hold your tongue.
                                                  --Prior.
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   5. (Naut.) Same as Puddening.
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   Pudding grass (Bot.), the true pennyroyal (Mentha
      Pulegium), formerly used to flavor stuffing for roast
      meat. --Dr. Prior.

   Pudding pie, a pudding with meat baked in it. --Taylor
      (1630).

   Pudding pipe (Bot.), the long, cylindrical pod of the
      leguminous tree Cassia Fistula. The seeds are separately
      imbedded in a sweetish pulp. See Cassia.

   Pudding sleeve, a full sleeve like that of the English
      clerical gown. --Swift.

   Pudding stone. (Min.) See Conglomerate, n., 2.

   Pudding time.
      (a) The time of dinner, pudding being formerly the dish
          first eaten. [Obs.] --Johnson.
      (b) The nick of time; critical time. [Obs.]
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                Mars, that still protects the stout,
                In pudding time came to his aid.  --Hudibras.
          [1913 Webster] Pudding fish

WordNet (r) 3.0 (2006):

Mentha pulegium
    n 1: Eurasian perennial mint have small lilac-blue flowers and
         ovate leaves; yields an aromatic oil [syn: pennyroyal,
         Mentha pulegium]