scad

noun

Etymology: Unknown, early 17th century, perhaps related to shad. In sense “large amount”, US 1869, of unknown origin, presumably from large shoals/schools of the fish.

1. Any of several fish, of the family Carangidae, from the western Atlantic.
2. A large number or quantity.

   “scads of money”

   “it will surely rust, take on a loud of stains and pits, acquire a scad of dust.”