society > communication > indication > signalling > audible signalling > signalling with other sounding instruments > sound signal on instrument [verb (intransitive)] > sound hooter or siren as signal (2)
Applied to certain sounds mechanically produced, esp. that of a steam siren or ‘hooter’, used as a signal to workmen for beginning or ceasing…
intransitive. To make signals with the siren. Also (of a police car, etc.), to proceed with siren blaring; to make one's way thus.