noun, noun or participle which takes 'suru'
Rare formal term for intimidation or threatening behavior. In modern Japanese, 脅迫 (きょうはく) is far more common for 'threat' or 'intimidation'.
彼は恐嚇とも取れる発言をした。
He made a remark that could be taken as intimidation.
その手紙は恐嚇の内容だった。
The letter contained threats.