Old English foresteall ‘an ambush’ (see fore- and stall). As a verb the earliest sense (Middle English) was ‘intercept and buy up goods before they reach the market, so as to raise the price’ (formerly an offence)
古英語 foresteall「待ち伏せ」(fore-、stall を参照)。動詞としての最も早い意味(中英語)は「商品が市場に届く前に横取りして買い占め、値をつり上げる」(かつては犯罪)。