Definition of "Relay" :

noun: the act of passing something along from one person or group to another

"The relay was successful."

noun: electrical device such that current flowing through it in one circuit can switch on and off a current in a second circuit

noun: a race between teams; each member runs or swims part of the distance

noun: a fresh team to relieve weary draft animals

noun: a crew of workers who relieve another crew

verb: pass along

"Please relay the news to the villagers."

verb: control or operate by relay