ace in the hole / ace up one's sleeve
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 - Nadrzędna kategoria: Idiomy angielskie (English idioms)
 - Kategoria: Angielskie idiomy biznesowe
 
ace in the hole / ace up one's sleeve![]()  | 
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(n) sth which is held secretly in reserve until needed; a hidden advantage - as w rękawie; atut; rezerwa  | 
				
			![[WYMOWA: From the Merriam-Webster Online Dictionary at www.Merriam-Webster.com]](http://www.angielski.edu.pl/images/audio.png)
