Tenure (5)
(Other definitions for lease that I've seen before include "Summer's has too short a date (Shak.)" , "Let for money" , "Contract allowing use of a property" , "Contract to rent" , "Contract for use of land or building" .)
(Other definitions for stint that I've seen before include "one's allotted task" , "Be niggardly, or fixed amount of work" , "Brief spell" , "Spot of work" , "Restrict to small allowance, be niggardly" .)