(archaic) The lowest title of nobility in Portugal, corresponding to that of hidalgo in Spain.

In the United States, a person who resists or refuses to pay a tax for which the government has determined that person is liable, based on a disagreement with the policies of the government.

A three-bit computational circuit that swaps the last two bits if the first bit is 1. Any logical or arithmetic operation can be constructed entirely of such gates.

An SI unit equal to one billionth of a tesla.