forage (n.)youdaoicibaDictYouDict
early 14c. (late 13c. as Anglo-Latin foragium) "food for horses and cattle, fodder," from Old French forrage "fodder; foraging; pillaging, looting" (12c., Modern French fourrage), from fuerre "hay, straw, bed of straw; forage, fodder" (Modern French feurre), from Frankish *fodr "food" or a similar Germanic source, from Proto-Germanic *fodram (source of Old High German fuotar, Old English fodor; see fodder). Meaning "a roving in search of provisions" in English is from late 15c. Military forage cap attested by 1827.
forage (v.)youdaoicibaDictYouDict
early 15c., "to plunder, pillage," from forage (n.) or from Middle French fourrager. Meaning "hunt about for" is from 1768. Related: Foraged; foraging.
foray (n.)youdaoicibaDictYouDict
late 14c., "predatory incursion," Scottish, from the verb (14c.), perhaps a back-formation of Middle English forreyer "raider, forager" (mid-14c.), from Old French forrier, from forrer "to forage," from forrage "fodder; foraging; pillaging, looting" (see forage (n.)). Disused by 18c.; revived by Scott. As a verb from 14c.