chase (one's) tail

chase (one's) tail

To take action that is ineffectual and does not lead to progress. Refers to how a dog can exhaust itself by chasing its own tail. Come on, Bill, go to sleep. You're just chasing your tail at this point, but you might have a breakthrough with the research if you take a break from it. I'm trying not to chase my tail on this project, but so many components of it are just not working out.
See also: chase, tail

chase tail

slang To pursue or seek out sexual activity with someone. (Usually used by men to refer to women.) My brother always spends his weekends chasing tail in bars around town.
See also: chase, tail
Farlex Dictionary of Idioms.

chase your (own) tail

keep on doing something futile. informal
See also: chase, tail
Farlex Partner Idioms Dictionary

chase your (own) ˈtail

be very busy but in fact achieve very little: In my first month at college I was continually chasing my own tail and being late for everything. ▶ ˈtail-chasing noun
If a dog or cat chases its tail, it runs round in circles trying to bite its own tail.
See also: chase, tail
Farlex Partner Idioms Dictionary

chase (one's) tail

To exert oneself vigorously but ineffectually.
See also: chase, tail
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • chase tail
  • chase your tail
  • be chasing (one's) (own) tail
  • be chasing tail
  • be chasing your tail
  • nip on (someone's or something's) heels
  • nip on (someone's or something's) toes
  • dud
  • duds
  • boat anchor