FLAT BALL BEARING
  1. Slang. A defective product; a nonoperational person or thing. (PRD Gloss)
  2. cases that don't roll on the assembly line of the HGC. Qual is wholly in the flat ball bearing business. The HGC and Academy are wholly in the assembly line business, dealing in fairly round ball bearings. (HCOB 6 Aug 65)


Technical Dictionary