calenture

n. [ F. calenture, fr. Sp. calenture heat, fever, fr. calentar to heat, fr. p. pr. of L. calere to be warm. ] (Med.) A name formerly given to various fevers occuring in tropics; esp. to a form of furious delirium accompanied by fever, among sailors, which sometimes led the affected person to imagine the sea to be a green field, and to throw himself into it. [ 1913 Webster ]