- An instance of spinning 180 degrees, so that one is facing in the opposite direction.
- He did a 180 off the diving board.
- (figuratively) The exact opposite.
- The friendly welcome was a 180 from what she had been expecting
- (figuratively, by extension) A complete change of direction or opinion.
- She used to like turnips, but she did a 180 and now hates them.
- Often used with do.