rasher (n.)youdaoicibaDictYouDict[rasher 词源字典]
"thin slice of bacon or ham," 1590s, of unknown origin. Perhaps from Middle English rash "to cut," variant of rase "to rub, scrape out, erase." However, early lexicographer John Minsheu explained it in 1627 as a piece "rashly or hastily roasted."[rasher etymology, rasher origin, 英语词源]