noun
first secretary (of a communist party)
Refers specifically to the top leadership position in a communist party, equivalent to party leader. Used in historical and contemporary contexts for parties such as the Chinese Communist Party or the former Soviet Communist Party.
中国共産党の第一書記は、党の最高指導者です。
The First Secretary of the Chinese Communist Party is the party's top leader.
ソ連時代、第一書記は大きな権力を持っていた。
During the Soviet era, the First Secretary held great power.
総書記 (general secretary) is another top party title, often used interchangeably with 第一書記 in some contexts, but 第一書記 specifically implies the first or primary secretary.
Compound of 第一 (first) and 書記 (secretary), a calque from the political terminology of communist parties.