position of boss; big-shot status
Refers to the social or organizational standing of a boss or leader, often in hierarchical groups like yakuza or traditional crafts. Can imply both the role and the influence that comes with it.
He settled into the position of boss at a young age.
The responsibility that comes with being the boss is heavy.
Compound of 親分 (boss, leader) and 株 (stock, share, status). The 株 here metaphorically extends the idea of a 'share' to mean a recognized position or rank within a group.