D defs.my
Entry 2 senses Webster, 1913

Light-o'-love

/(līt"ō̇-lŭv`)/ · Light·-o'-love · IPA
01 n. An old tune of a dance, the name of which made it a proverbial expression of levity, especially in love matters.
  1. 1.
    An old tune of a dance, the name of which made it a proverbial expression of levity, especially in love matters.
  2. 2.
    Hence: A light or wanton woman; a woman inconstant in love. Called also light-of-love. Also: light-of-love