speck (n.)youdaoicibaDictYouDict[speck 词源字典]
Old English specca "small spot, stain," of unknown origin; probably related to Dutch speckel "speck, speckle," Middle Dutch spekelen "to sprinkle" (compare speckle (v.)). Meaning "tiny bit" developed c. 1400. As a verb, 1570s, from the noun. Related: Specked.[speck etymology, speck origin, 英语词源]