'Sunstroke' definitions:

Definition of 'sunstroke'

From: WordNet
noun
Sudden prostration due to exposure to the sun or excessive heat [syn: sunstroke, insolation, thermic fever, siriasis]

Definition of 'Sunstroke'

From: GCIDE
  • Sunstroke \Sun"stroke`\, n. (Med.) Any affection produced by the action of the sun on some part of the body; especially, a sudden prostration of the physical powers, with symptoms resembling those of apoplexy, occasioned by exposure to excessive heat, and often terminating fatally; coup de soleil. [1913 Webster]