CEDICT
written in a forceful hand; penetrating; profound
Wiktionary
晉朝王羲之書祝版,工人削版,墨跡透入木板三分的故事。典出唐.張懷瓘《書斷.卷二.王羲之》。本形容筆力遒勁。後比喻評論深刻中肯或描寫精到生動。
重編國語辭典
維基詞典
All at once she began to shout in a shrill voice.
Source: Tatoeba