looker (n.)youdaoicibaDictYouDict[looker 词源字典]
Old English locere "one engaged in looking," agent noun from look (v.). Meaning "one who watches over" is from c. 1300; that of "one who has a certain appearance" is late 15c. Slang meaning "attractive woman" attested from 1893; good-looker is attested from 1866 of both women and horses. Looker-in (1927) was an early word for "television viewer."[looker etymology, looker origin, 英语词源]