slue-foot

noun4

1. •
   (US, Canada) A foot that is large and turned outwards or is otherwise awry.
2. •
   (US, Canada) A person with slue-feet.
3. •
   A dance that had a brief popularity in the mid to late 1950s.

   • Since Fred Astaire introduced it in the movie 'Daddy Longlegs,' the Slue-foot has become the new dance craze of the world. — 1955
4. •
   (US, slang) A detective or police officer.

   • Military Intelligence seems to be on the spot in a quiet sort of way. I just met a G-2 slue-foot and he was a most efficient guy! They're keeping low, I think, until they nail their man. — 1943