toc·sin /ˈtɑksən/
警鐘,警報
Toc·sin n. An alarm bell, or the ringing of a bell for the purpose of alarm.
The loud tocsin tolled their last alarm. --Campbell.
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tocsin
n 1: the sound of an alarm (usually a bell) [syn: alarm bell]
2: a bell used to sound an alarm [syn: warning bell]