A klaxon is a loud, electric horn or siren used as a warning or alert signal, typically in emergency situations or on vehicles like cars, trains, or ships. Full definition
There are a few annoyances however, as each time you come to the end of your boost gauge a warning klaxon sounds and there isn't an invert Y - axis option for the right stick camera control either. (mechadamashii.com)
is it just me or is today's bankruptcy filing by legendary Gibson guitars just another blaring klaxon alarm that this show is just about over? (kunstler.com)
Saks also has a putter equipped with klaxon horn to annoy one's opponent at crucial moments, an electric light for late hole - outs, a tape measure, a level on the blade — and a compass. (si.com)