Source : Webster's Revised Unabridged Dictionary (1913)

Greed \Greed\, n. [Akin to Goth. gr?dus hunger, Icel.
   gr[=a][eth]r. [root]34. See {Greedy.}]
   An eager desire or longing; greediness; as, a greed of gain.

Source : WordNet®

greed
     n 1: excessive desire to acquire or possess more (especially more
          material wealth) than one needs or deserves
     2: reprehensible acquisitiveness; insatiable desire for wealth
        (personified as one of the deadly sins) [syn: {avarice}, {covetousness},
         {rapacity}, {avaritia}]