Denshi Jisho — Online Japanese dictionary

大勢 おおぜい many; crowd; great number of people
Common word, Noun, No-adjective 
大勢 たいせい general trend; current thought
Common word, Noun 
大勢 たいぜい many; crowd; great number of people
Noun, No-adjective 
大勢順応 たいせいじゅんのう conformism; following the crowd; swimming with the tide; me-tooism
Noun 

You can also

Look up kanji details for 大勢.

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