From Longman Dictionary of Contemporary Englishhammer away phrasal verb1 REPEATto keep saying something because you want people to understand or accept it at I keep hammering away at this point because it’s important.2 WORK HARDto work hard and continuously at something at Keep on hammering away at achieving your goals. → hammer→ See Verb table
Examples from the Corpus
hammer away• Clinton hammered away at campaign themes tailor-made to appeal to predominantly white swing voters who might otherwise vote for Republican Bob Dole.• Brennan hammered away at the fact that the administration was to blame.• Mrs Clinton began hammering away at the issues during her appearance before Florida Democrats at the Democratic convention.• Often George came in at five o'clock in the morning to hammer away at the pirate ship in the carpenter's shop.• I keep hammering away at this point but it applies to so many areas and it's so rarely done.• All afternoon, Martin had been hammering away in the conservatory.hammer at• Clinton hammered away at campaign themes tailor-made to appeal to predominantly white swing voters who might otherwise vote for Republican Bob Dole.• Mrs Clinton began hammering away at the issues during her appearance before Florida Democrats at the Democratic convention.• Often George came in at five o'clock in the morning to hammer away at the pirate ship in the carpenter's shop.hammer at• Clinton hammered away at campaign themes tailor-made to appeal to predominantly white swing voters who might otherwise vote for Republican Bob Dole.• Mrs Clinton began hammering away at the issues during her appearance before Florida Democrats at the Democratic convention.• Often George came in at five o'clock in the morning to hammer away at the pirate ship in the carpenter's shop. 