Definition of trade:
		
	
		
		
		(adj) :
		
		relating to or used in or intended for trade or commerce; "a trade fair"; "trade journals"; "trade goods"
		
			
	
		
		
		(n) :
		
		the commercial 
exchange (buying and selling on domestic or international markets) of goods and services; the collective people who perform a particular kind of skilled work; "he represented the craft of brewers"; "as they say in the trade"
		
 
			
	
		
		
		(v) :
		
		to engage in the trade of; to be traded at a certain price or under certain conditions; as in stock trade
		
								
				"will you trade your precious watch for my earring?"