What is a bucket brigade? Here are some definitions.
Noun
The long line of people, in a primitive firefighting technique, who pass buckets of water hand-to-hand from the nearest water source to the site of a fire, in an attempt to douse it.
(by extension) any process in which something is passed along a chain.
(electronics) A discrete-time analogue delay line that moves a signal along a line of capacitors, one step at each clockcycle.