Denshi Jisho — Online Japanese dictionary

せいたん birth; nativity
Common word, Noun, Suru verb 
きょたん exaggerated talk
Noun 
こうたん exaggerated beyond recognition; nonsense; wild talk; lies
Na-adjective, Noun 
こうたん birth (regal); nativity
Noun, Suru verb 
さいたん resurrection (of a company or school, etc.)
Noun 
ご降 ごこうたん birth (regal); nativity
Noun, Suru verb 
御降 ごこうたん birth (regal); nativity
Noun, Suru verb 
処女降 しょじょこうたん virgin birth (esp. the Virgin Birth of Jesus)
Noun 

You can also

Look up kanji details for *誕.

Try a Yahoo Jisho search for *誕 .
Try a Goo Jisho search for *誕 .
Try a Google search for *誕 .