burthen

That, as Thomas Jefferson explained to a visiting Englishman, they were “made to carry burthens.”

The vapours weep their burthen to the ground,

Lincoln also prioritized progressive taxation, insisting that “the burthen of revenue falls almost entirely on the wealthy and luxurious few, while the substantial and laboring many … go entirely free.”

If a not inconsiderable number of the higher middle classes gained the special privileges of nobility, the burthens of the rest of the people were only increased thereby.

Tails were sent by Nature, not merely as an ornament, but to enable the animal to whisk away the flies, which in hot weather render its life a burthen.