(a) (bir iş üzerinde) çok uğraşmak, çok büyük gayret sarfetmek, çalışıp çabalamak. She hammered away
at her homework. He hammered away at his speech for hours. I hammered all afternoon. (b) ısrarla üzerinde durmak, habire taciz etmek, k.d. başının etini yemek. He hammered away at his mother until he got what he wanted.