Source : Webster's Revised Unabridged Dictionary (1913)

Paddy \Pad"dy\, a. [Prov. E. paddy worm-eaten.]
   Low; mean; boorish; vagabond. ``Such pady persons.'' --Digges
   (1585). ``The paddy persons.'' --Motley.

Paddy \Pad"dy\, n.; pl. {Paddies}. [Corrupted fr. St. Patrick,
   the tutelar saint of Ireland.]
   A jocose or contemptuous name for an Irishman.

Paddy \Pad"dy\, n. [Either fr. Canarese bhatta or Malay
   p[=a]d[=i].] (Bot.)
   Unhusked rice; -- commonly so called in the East Indies.

   {Paddy bird}. (Zo["o]l.) See {Java sparrow}, under {Java}.

Source : WordNet®

Paddy
     n 1: (slur) a person of Irish descent [syn: {Mick}, {Mickey}]
     2: an irrigated or flooded field where rice is grown [syn: {paddy
        field}, {rice paddy}]
     3: rice in the husk either gathered or still in the field