air horn

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air horn

[′er ‚hȯrn]
(mechanical engineering)
In an automotive engine, the upper portion of the carburetor barrel through which entering air passes in quantities controlled by the choke plate and the throttle plate.
References in periodicals archive ?
According to an investigation released by NACE in September 1993, the workers hadn't followed written procedures for mixing the chemicals, they had entered the contaminated area without the proper respiratory equipment, and the on-site airhorn had failed to sound.
Sounding the airhorn for the event at Hopetoun House, near Edinburgh, Heather paid tribute to her new husband for helping her fight the disease.
Dodie Throssel's two sons, Shane, 30, and Micah, 32, used shouts and an airhorn in an earlier attempt this week to track the dogs but could not find them.
His sets are described as energetic, to say the least, and he is never without an airhorn, so prepare for things to get loud.
Then they're unable to get up without the judicious use of an airhorn because they've not had enough sleep.
They were hoping to hear the warning blast of an airhorn, followed by the reverberating boom of dynamite blowing a hole through the last portion of a 35 1/2 -foot-long concrete plug that for decades has blocked a diversion tunnel at the base of the dam.