a device that trips like a switch and opens the circuit when overloaded
"The old breaker tripped again as soon as I plugged in my space heater, cutting off power to the whole kitchen."
Something that breaks.
"The lifeboat was fully stocked with oars, water, and a survival breaker for emergency use."
A small cask of liquid kept permanently in a ship's boat in case of shipwreck.
Used to open a conversation or call for a response on CB radio.
"He tapped his microphone and called out, Breaker, over here."