A breakdown is a trick most commonly done with rings. The earliest known instance of a juggler doing a breakdown was in 1961.
In this trick most of the props being juggled are placed one at a time in various places on the juggler's body (around the neck, under the arms, between the legs, etc.) and are held there while the remaining props are still being juggled, sometimes until only two or fewer objects are left in the hands. Then the objects are added back into the pattern one at a time.
Lajos nereus
8 ring breakdown by Lajos Nereus
6 Ring Juggling Trick
6 ring fast breakdown by Jason Garfield
JUGGLE with Chris Noonan round 4 - answer and new trick
Haavard Hvidsten does a 5 ball breakdown involving kick-ups and neck catches during an online game of JUGGLE
Basic breakdown with rings - Juggling tutorial
Breakdown tutorial