{v.} 1. To work steadily at; keep at. * /That lesson is not easy, but hammer away at it and you will get it right./ 2. To talk about again and again; emphasize. * /The speaker hammered at his opponent's ideas./
HAMMER AWAY AT
Meaning of HAMMER AWAY AT in English
Slang English vocab. Английский сленговый словарь. 2012