Denshi Jisho — Online Japanese dictionary

さいしょう prime minister
Common word, Noun 
さいりょう supervision; superintendence; management; supervisor
Noun, Suru verb 
相の器 さいしょうのき person qualified for prime minister
Noun 

You can also

Look up kanji details for 宰.

Try a Yahoo Jisho search for 宰 .
Try a Goo Jisho search for 宰 .
Try a Google search for 宰 .