hammer at

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.
Categories: verb

An client error occurred: Error calling GET https://www.googleapis.com/youtube/v3/search?part=id%2Csnippet&q=%22hammer+at%22&maxResults=4&videoEmbeddable=true&videoSyndicated=true&safeSearch=strict&type=video&key=AIzaSyCfLRuAZZNAQm6a5uDzgY-Tt668bxsppCs: (403) The request cannot be completed because you have exceeded your <a href="/youtube/v3/getting-started#quota">quota</a>.