Real Dictionary

'cause
conjunction: 'Cause is an informal way of saying because.

'cause in American English
conjunction: because

cause
If you have cause for a particular feeling or action, you have good reasons for feeling it or doing it.
countable noun: The cause of an event, usually a bad event, is the thing that makes it happen.
verb: To cause something, usually something bad, means to make it happen.

cause in American English
anything producing an effect or result
noun: a person or thing that acts, happens, or exists in such a way that some specific thing happens as a result; the producer of an effect

cause in British English
noun: a person, thing, event, state, or action that produces an effect