graze: [OE] There is no difficulty about the etymology of graze ‘feed on grass’: it was formed in Old English times as a derivative of the noun græs (modern English grass). But what about graze in the sense ‘scrape lightly’, first recorded in the 17th century? In the absence of any convincing alternative candidates, it is usually taken to be simply a special use of graze ‘feed on grass’, in the sense ‘remove grass close to the ground’, as some animals do in grazing – like a ‘close shave’, in fact. => grass[graze etymology, graze origin, 英语词源]