Book or treatise regarded as authoritative, generally of long-accepted value within a profession or field of study. n. lease An agreement in which the right of occupancy or use of real property, or the right to use personal property, is conveyed to another for a set period of time in return for consideration, typically in the form of periodic payments. gross lease. Lease in which a tenant pays a flat sum inclusive of all utilities and other expenses. month-to-month lease. Rental of property w...