A Spanish unit both of weight and of measure, varying in different places and for different commodities, but generally about 275 pounds a voirdupois as a weight and 40 gallons as a measure.(noun)
The Century Dictionary (Public Domain)
Use "carga" in a sentence
"The load, which is termed a carga, was generally three hundred pounds."
"Load bearing walls, muros de carga, rely upon the compressive strength of the blocks or bricks and not just the beams."
"Un granjero llamado Chon tuvo una severa colisión contra un gran camión de carga."