slinky (adj.)youdaoicibaDictYouDict[slinky 词源字典]
"sinuous and slender," of women or clothes, 1921, from slink + -y (2). Related: Slinkily; slinkiness. As a proprietary name (with capital from S-) for a coil of spring marketed as a toy, 1948, by James Industries Inc., Philadelphia, U.S.A.[slinky etymology, slinky origin, 英语词源]