1. 
   Wagon headed
   a term used to describe a semi - cylindrical ceiling.
   Found op http://www.encyclo.co.uk/local/20935
   
   
2. 
   Wagon-headed
   Wag'on-head`ed adjective Having a top, or head, shaped like the top of a covered wagon, or resembling in section or outline an inverted U , thus ...; as, a wagonheaded ceiling.
   Found op http://www.encyclo.co.uk/webster/W/2
   
   
3. 
   Wagon-headed
   • (a.) Having a top, or head, shaped like the top of a covered wagon, or resembling in section or outline an inverted U, thus /; as, a wagonheaded ceiling.
   Found op http://thinkexist.com/dictionary/meaning/wagon-headed/
   
   

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