Would almond flour work for macarons?
Here I'm assuming that you mean macaroons as in the French patisserie macarons rather than the simpler coconut or almond based macaroons.

In any case almond meal and almond flour are essentially the same thing, both are almonds ground into a fine (or not so much in your case) 'flour' or 'powder'. Apparently, almond flour is made from 'blanched' (almonds which have had their skin removed) almonds whereas almond meal can be made from either almonds with their skins on (whole) or 'blanched'. I have, however, always found them to be used interchangeably.

If your problem is graininess, then you could either sieve the ground almonds before using or blitz/grind them finer in a food processor until the desired consistency is reached, however if you're grinding them in a food processor make sure you do it in small batches or if you're making macarons blitz them with the icing sugar (for the tant pour tant) to avoid making almond butter. Personally, I would do both to achieve a fine powder.