Source : Webster's Revised Unabridged Dictionary (1913)

Gastralgia \Gas*tral"gi*a\, n. [NL., fr. Gr. ?, ?, stomach + ?
   pain.] (Med.)
   Pain in the stomach or epigastrium, as in gastric disorders.

Source : WordNet®

gastralgia
     n : an ache localized in the stomach or abdominal region [syn: {stomachache},
          {stomach ache}, {bellyache}]