Tradecraft is a noun that means the techniques and procedures of espionage.
Our word of the day combines two common English words — ‘trade’ and ‘craft’ — to get a word that may refer broadly to the skills acquired through the experience of any trade, or more specifically, the skills of espionage.
My little sister could pursue a career with the FBI when she gets older. With all of the Tradecraft she’s learned from spying on me, should would be a top notch secret agent.