Definition of yes-girl in English:

yes-girl

Pronunciation /ˈjɛsɡəːl/

noun

informal US
  • 1A young woman who assents to romantic or sexual proposals; a promiscuous woman.

  • 2A young woman who habitually agrees with or assents to the proposals of a superior; an obsequiously deferential young woman. Usually depreciative. Compare "yes-man", yes-woman .

Origin

1920s; earliest use found in Des Moines (Iowa) News. From yes + girl, after yes-woman.