s 5 Interpretation.
In this Act the following expressions have the meanings hereby respectively assigned to them, that is to say:— “ Damage ” includes dilapidations, but does not include war damage within the meaning of the War Damage Act 1943; “ Emergency powers ” has the same meaning as in the Compensation (Defence) Act 1939, that is to say any power conferred by— . . . section nine of the Civil Aviation Act 1949 , as amended by any subsequent enactment, or any power exercisable by virtue of the prerogative of the Crown; “ Lease ” includes an under-lease or other tenancy, an assignment operating as a lease or under-lease, and an agreement for a lease, under-lease or tenancy, or for such an assignment, and the expression “ covenant ” shall be construed accordingly; “ Repairing covenant ” means a covenant, whether express or implied, and whether general or specific, to keep in repair any premises comprised in a lease, or to leave or put any such premises in repair, or to pay a sum of money in lieu of leaving or putting the premises in repair, at the termination of the lease, but does not include a covenant to lay out in the reinstatement of any such premises money received under a policy of insurance.