Definition of "because" [be•cause]

• For the reason that; since. (conjunction)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "INSKEEP: Was that because studio time is expensive or because� (Soundbite of laughter) Mr. AUERBACH: That's because, you know, we're cheap."
• "On his second day in office, President Obama repudiated George W. Bush’s obsessive and destructive secrecy by ordering his government to obey the Freedom of Information Act. He said it should not withhold documents because they are embarrassing, or reveal failures and errors, or “because of speculative or abstract fears."
• "Just to clarify, I think that Rose and Donna and Martha, and Mickey, and Jack are special *because* of all of those things they do with their 'ordinary' human bravery and cleverness, which is why the s1 and s4 finales bother me, because they leave us with the inadvertent implication that to be really special, you have to be like a Time Lord."