Main Entry:

be·cause

Pronunciation:

\bi-ˈkȯz, -ˈkəz, -ˈkȯs, bē-\

Function:

conjunction

Etymology:

Middle English because that, because, from by cause that

Date:

14th century

1 : for the reason that : since <rested because he was tired> 2 : the fact that : that <the reason I haven't been fired is because my boss hasn't got round to it yet — E. B. White>