that service which a tenant owed his lord, to be done by the work beasts of the tenant, as the carriage of wheat, turf, etc.-a tariff or duty on goods, etc.-any charge in addition to the regular charge for freight of goods shipped.-a contribution to a loss or charge which has been imposed upon one of several for the general benefit; damage done by sea perils.-the equitable and proportionate distribution of loss or expense among all interested.-a mean proportion, medial sum or quantity, made out of unequal sums or quantities; an arithmetical mean. thus, if a loses 5 dollars, b 9, and c 16, the sum is 30, and the average 10.-any medial estimate or general statement derived from a comparison of diverse specific cases; a medium or usual size, quantity, quality, rate, etc.-in the english corn trade, the medial price of the several kinds of grain in the principal corn markets.-pertaining to an average or mean; medial; containing a mean proportion; of a mean size, quality, ability, etc.; ordinary; usual; as, an average rate of profit; an average amount of rain; the average englishman; beings of the average stamp.-according to the laws of averages; as, the loss must be made good by average contribution.-to find the mean of, when sums or quantities are unequal; to reduce to a mean.-to divide among a number, according to a given proportion; as, to average a loss.-to do, accomplish, get, etc., on an average.-to form, or exist in, a mean or medial sum or quantity; to amount to, or to be, on an average; as, the losses of the owners will average twenty five dollars each; these spars average ten feet in length.