From Longman Dictionary of Contemporary Englishweigh a tonweigh a toninformalHEAVY to be very heavy Your bag weighs a ton! → ton
Examples from the Corpus
weigh a ton• They were full of books and weighed a ton.• Your bag weighs a ton!• I expect the cab weighs a ton, but the whole kit is still very portable, size-wise.• Some one mentioned to me that 18 to 24 inches of snow on a driveway 10 by 40 feet weighs a ton.• What on earth have you got in this suitcase? It weighs a ton!• It looked as though it weighed a ton and seemed to quiver every so often.• The shire horses are direct descendants of the great war horses, and each one weighs a ton.• That piano weighs a ton. You'll need four men to lift it.• Each one seemed to weigh a ton at least to four small eight-year-olds.• That thing over there seems to weigh a ton. 