burthen

Dorothy had tried her best to relieve Letty of half her burthen, and in return had been made a bone of contention between them.

I should be sorry to lay upon you, my dear madam, a burthen greater than the one you have already to bear.

But there, all novels are a heavy burthen while they are doing, and a sensible disappointment when they are done.

Her length is six hundred and ninety-five feet; her breadth eighty-five feet, and her burthen twenty-two thousand tons.

When John Clarke was sent to negotiate the second charter he was obliged to burthen his estate with a mortgage.