whale away
v., informal
1. To beat or hit hard; strike again and again.
■ Often used with "at".
The boxer is whaling away at his opponent with both fists.
2. To attack severely or again and again; go on without stopping or with great force; pound away.
Mary has been whaling away on the typewriter for an hour.
■ Often used with "at".
During the election the Mayor whaled away at the other party in his speeches.

[TahlilGaran] English Idioms Dictionary ▲