Toast is defined as to warm, heat or brown, or to give cheers to someone.(verb)
The definition of a toast is a speech or raising of the glass in honor of someone, or bread served browned by heat.(noun)
See toast in Webster's New World College Dictionary
Origin: ME tosten < OFr toster < VL *tostare < L tostus, pp. of torrere, to parch, roast: see thirst
Origin: from the use of toasted spiced bread to flavor the wine, and the notion that the person honored also added flavor
transitive verb, intransitive verb
See toast in American Heritage Dictionary 4
verb toast·ed, toast·ing, toasts verb, transitive
Origin: Middle English tosten
Origin: , from Old French toster
Origin: , from Vulgar Latin *tostāre
Origin: , frequentative of Latin torrēre, to parch, burn; see ters- in Indo-European roots.
Origin: Perhaps from toast1 (from the use of spiced toast to flavor drinks).
Learn more about toast