best play, strongest means, most effective device, trick; see agent 1, device 2, strength 1.
"trump card." YourDictionary, n.d. Web. 11 October 2018. <http://thesaurus.yourdictionary.com/trump-card>.
trump card. (n.d.). Retrieved October 11th, 2018, from http://thesaurus.yourdictionary.com/trump-card
Something, especially something held in reserve, that gives one a decisive advantage:
Yes, I'd like to receive Word of the Day emails from YourDictionary.com
By continuing, you agree to our
Please set a username for yourself.
People will see it as Author Name with your public flash cards.