chock vs flat out

chock

adv
  • Entirely; quite. 

verb
  • To make a dull sound. 

  • To stop or fasten, as with a wedge, or block; to scotch. 

  • To insert a line in a chock. 

noun
  • Any fitting or fixture used to restrict movement, especially movement of a line; traditionally was a fixture near a bulwark with two horns pointing towards each other, with a gap between where the line can be inserted. 

  • Any object used as a wedge or filler, especially when placed behind a wheel to prevent it from rolling. 

flat out

adv
  • Bluntly, no holds barred, totally, outright. 

  • At top speed. 

verb
  • To fail after a promising beginning; to disappoint expectations. 

noun
  • A uncambered corner of racetrack; a racetrack whose corners are uncambered. 

  • A wrap, an item of food consisting of various ingredients wrapped in a tortilla or pancake. 

  • A section of piste that is relatively flat, causing or allowing skiers to slow down. 

  • A baked portion of flatbread; a baked item that is not meant to rise. 

adj
  • Complete, total, downright. 

  • Lazy, sleeping. 

  • Very busy. 

  • Used other than figuratively or idiomatically: see flat, out. 

How often have the words chock and flat out occurred in a corpus of books? (source: Google Ngram Viewer )