Source : Webster's Revised Unabridged Dictionary (1913)

Pimiento \Pi*mien"to\, n. [Sp.]
   The Spanish sweet pepper, the fruit of which is used as a
   vegetable, to stuff olives, etc.

Source : WordNet®

pimiento
     n 1: plant bearing large mild thick-walled usually bell-shaped
          fruits; the principal salad peppers [syn: {sweet pepper},
           {bell pepper}, {pimento}, {paprika}, {sweet pepper
          plant}, {Capsicum annuum grossum}]
     2: fully ripened sweet red pepper; usually cooked [syn: {pimento}]