Denshi Jisho — Online Japanese dictionary

塔 とう 1: tower; steeple; spire;
2: (Noun) (Abbreviation) stupa; pagoda; dagoba
Common word, Noun, Noun suffix 
塔婆 とうば 1: (Abbreviation) stupa; pagoda;
2: wooden grave tablet
Noun 
塔屋 とうや rooftop structure, e.g. tower, elevator machine room, etc.
Noun 
塔屋 とうおく rooftop structure, e.g. tower, elevator machine room, etc.
Noun 
塔楼 とうろう tall building
Noun, Obscure term 
塔中 たっちゅう sub-temple, especially one founded to commemorate the death of a high priest
Noun 
塔頭 たっちゅう sub-temple, especially one founded to commemorate the death of a high priest
Noun 

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