indefinite article 
noun Grammar
A determiner (a and an in English) that introduces a noun phrase and implies that the thing referred to is non-specific (as in she bought me a book; government is an art; he went to a public school). Typically, the indefinite article is used to introduce new concepts into a discourse. Compare with definite article.The use of the indefinite article with predicate nouns is to some extent an idiosyncratic feature of English....
- It seems to me that the argument requires not only reading ‘or’ in a particular way but substituting the definite article for the indefinite article.
- There may be a difference between the definite article and the indefinite article, and there are different views on capital letters, I suppose.
- beat the bejesus out of
- be at the bottom of
- beat the bounds
- beat the bushes
- beat the clock
- beat the count
- beat the drum for
- be at the end of
- beat the pants off
- be at the races (or in the race)
- beat the rap
- beat the system
- be at the top of one's game
- Beattie, Ann
- beat time
- Beatty, David
- Beatty, Warren
- beat-up
- beat up on someone
- beau
- Beaubourg Centre
- beaucoup
- beaucoup de
- Beaufort scale
- Beaufort Sea