A sudden or irregular incursion in border warfare; hence, any irregular incursion for war or spoils; a raid
an initial attempt (especially outside your usual areas of competence); "scientists' forays into politics" a sudden short attack briefly enter enemy territory
You can refer to a short journey that you make as a foray if it seems to involve excitement or risk, for example because it is to an unfamiliar place or because you are looking for a particular thing. Most guests make at least one foray into the town
steal goods; take as spoils; "During the earthquake people looted the stores that were deserted by their owners"
If you make a foray into a new or unfamiliar type of activity, you start to become involved in it. Emporio Armani, the Italian fashion house, has made a discreet foray into furnishings. her first forays into politics
If a group of soldiers make a foray into enemy territory, they make a quick attack there, and then return to their own territory. These base camps were used by the PKK guerrillas to make forays into Turkey. = raid
[ 'for-"A, 'fOr-, 'fär- ] (verb.) 14th century. From Middle English forrayen (“to pillage”), a back-formation of forrayour, forreour, forrier (“raider, pillager”), from Old French forrier, fourrier, a derivative of fuerre (“provender, fodder, straw”), of Germanic origin, from Frankish *fōdar (“fodder, sheath”), from Proto-Germanic *fōdrán, *fṓþran (“fodder, feed, sheath”), from Proto-Indo-European *patrom (“fodder”), *pat- (“to feed”), *pāy- (“to guard, graze, feed”). Cognate with Old High German fuotar (German Futter (“fodder, feed”)), Old English fōdor, fōþor (“food, fodder, covering, case, basket”), Dutch voeder (“forage, food, feed”), Danish foder (“fodder, feed”), Icelandic fóðr (“fodder, sheath”). More at fodder, food.