Definitions:
a college athlete who is withdrawn from university sporting events for a year to develop their skills and extend their period of playing eligibility by a further year at this level of competition

a supporter of garibaldi, in particular one of the thousand who sailed with him in 1860 to conquer sicily.

(of a coach) keep (a college athlete) out of university competition for a year in order to develop the athlete's skills and extend their period of playing eligibility

delay the start of formal schooling for (a child) by one year, typically so as to avoid a situation in which the child is among the youngest in their class