Yes, high is playable
					...and is worth 10 points.
			
	
		
		
		
	
	Found in the following dictionaries
	Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"High" Definition
        noun
        	
		A center of high atmospheric pressure; an anticyclone.
		
	 
	
	    	
		A high level or degree:  Summer temperatures reached an all-time high.
		
	 
	
	    	
	
	    	
		Slang   An intoxicated or euphoric condition induced by or as if by a drug.
		
	 
	
	    	
		The high gear configuration of a transmission.
		
	 
	
			    adjective
        	
		Advanced in development or complexity:  high forms of animal life; higher mathematics.
		
	 
	
	    	
		Being at or near the peak or culminating stage:  the high tourist season; high summer.
		
	 
	
	    	
		Characterized by lofty or stirring events or themes:  high adventure; high drama.
		
	 
	
	    	
		Constituting a climax; crucial:  The chase scene is the high point of the film.
		
	 
	
	    	
		Eminent in rank or status:  a high official.
		
	 
	
			    adverb
        	
		At, in, or to a lofty position, level, or degree:  saw a plane high in the sky; prices that had gone too high.
		
	 
	
	    	
		In an extravagant or luxurious way:  made a fortune and lived high.
		
	 
	
	    	
		At or to a high place, altitude, level, or degree  .
		
	 
	
			    idiom
        	
		High and dry  In a position of helplessness; stranded:  went off and left me high and dry.
		
	 
	
	    	
		High and dry  Nautical   Out of water. Used of a ship, for example.
		
	 
	
	    	
		High and low  Here and there; everywhere:  searched high and low for the keys.
		
	 
	
	    	
	
	    	
		On high  In a position of authority.
		
	 
	
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