It’s a nonsense word, gleaned from my teen years when FRIENDLY’S ice cream parlors sold a frappe’ (milk shake to you non Bostonian aliens) and called it a FRIBBLE ... I use it now to describe bearings and various other unknown parts of stuff ... ygutt’a know yer fribble bearings from yer muffler bearings, and don’t forget to winterize your blinkers with blinker fluid this year before the snow and ice hit.
Oh sorry. A 50 dollar fribble seemed like a good deal.