verb/peˈsaɾ/
to weigh (to determine the weight of an object); to weigh (to have a certain weight); to ponder; to be serious, to be grave; to weigh oneself
“Un galón de agua pesa 3,78 kilos.” — A gallon of water weighs 3.78 kilos.
Inherited from Old Spanish pesar, from Latin pēnsāre, whence also the doublet pensar 'think'. Cognate with English poise, French peser, Italian pesare, Portuguese pesar, and Romanian păsa.