Definitions
1.nounA heavy load.
2.nounA responsibility, onus.
3.nounA cause of worry; that which is grievous, wearisome, or oppressive.
4.nounThe capacity of a vessel, or the weight of cargo that she will carry."a ship of a hundred tons burden"
5.nounThe tops or heads of stream-work which lie over the stream of tin.
6.nounThe proportion of ore and flux to fuel, in the charge of a blast furnace.
7.nounA fixed quantity of certain commodities."A burden of gad steel is 120 pounds."
8.nounA birth.
9.nounThe total amount of toxins, parasites, cancer cells, plaque or similar present in an organism.
10.nounThe tonnage of a ship based on the number of tuns of wine that it could carry in its holds.