What is referred to by 'alumnus'?

What is referred to by 'aluminum company of america'? Based on the clue 'aluminum silicate mineral 6 across f e d s p a', what is the answer? Based on the clue 'alumni like some fraternity boys', what is the answer? Based on the clue 'alumni of this school include winston churchill si...', what is the answer? Based on the clue 'alvan clark made a 36 one of these for the lick a...', what is the answer? What is associated with: alvaro uribe became president of this s amer country in 2002 vowing to get tough on rebels dru… Based on the clue 'alveoli are tiny sacs clustered like grapes in the...', what is the answer? What is referred to by 'alvin c york'?