slinky I. \ˈsliŋkē, -ki\adjective (-er/-est) Etymology:slink (II) + -y chiefly dialect: slink 2 II. adjective (-er/-est) Etymology:slink (I) + -y chiefly dialect 1.: characterized by slinking : stealthily quiet < slinky movements > 2.: sleek and sinuous in outline < a slinky figure > especially: following the lines of the figure in a gracefully flowing manner — used of woman's clothing < a slinky evening gown >