tilt at windmills

tilt at windmills
tilt at windmills  {v. phr.},  {literary}
To do battle with an imaginary foe (after Cervantes' Don Quixote).
John is a nice guy but when it comes to departmental meetings he wastes everybody's time by constantly tilting at windmills.
Categories: time {literary} {v. phr.}

'tilt at windmills' on video