noun
power of the pen; force of writing
Refers to the persuasive or critical power of writing, often in a literary or journalistic context. Somewhat formal and literary.
彼の筆鋒は鋭く、社会の矛盾をえぐり出した。
His pen was sharp, exposing the contradictions of society.
その評論家の筆鋒は多くの政治家を震え上がらせた。
The critic's pen made many politicians tremble.