Webster's Revised Unabridged Dictionary · 1913

Leakage

Leakage ({not transcribed}) , noun

[Compare Dutch lekkage, for sense 1.]

1.
A leaking; also, the quantity that enters or issues by leaking.
2.
(Commerce) An allowance of a certain rate per cent for the leaking of casks, or waste of liquors by leaking.
3.
(Electricity) A leak; also; the quantity of electricity thus wasted.