the crime of doing something that could cause danger to your country, such as helping its enemies during a war 危害国家罪，叛国罪（如战时通敌） an act of high treason against the English crown 对英国的叛国行为 They were charged with treason and sentenced to death. 他们被指控犯有叛国罪，判了死刑。
Oxford Collocations Dictionaryadjective- high
- treason against
- an act of treason
Word OriginMiddle English: from Anglo-Norman French treisoun, from Latin traditio(n-) ‘handing over’, from the verb tradere.