| 单词 | signal cannon | 
| 释义 | > as lemmassignal cannon   signal cannon  n. ΚΠ 1760    Crit. Rev. July 2  				About 25,000 able..men, who were obliged, at firing the signal cannon, to appear in their martial accoutrements. 1831    N.-Y. Spectator 19 Aug.  				Far more terrific and appalling is the sound of a signal cannon. 1934    Music & Lett. 15 115  				After an introductory slow march, bugle and trumpet calls and signal cannon, the fun begins. 2009    New Haven 		(Connecticut)	 Reg. 		(Nexis)	 2 July  				Care manufactures between 250 and 300 signal cannons a year, mainly for yacht clubs,  vfw posts, Scouting groups and collectors. < as lemmas  | 
	
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