share

noun

1. : a portion belonging to, due to, or due from an individual a joint tortfeasor is liable for her share of the damages; specifically : the part allotted or belonging to one of a number owning together any property or interest the share of a joint tenant his share passed to his widow : the part allotted or belonging to one of a number owning together any property or interest the share of a joint tenant his share passed to his widow

2. a : any of the equal interests into which ownership of something (as a fund) is divided; specifically : any of the equal interests or rights into which the entire capital stock of a corporation is divided : any of the equal interests or rights into which the entire capital stock of a corporation is divided

   b : a certificate representing such a share