from The Century Dictionary and Cyclopedia
- n. Something thrown in in addition; an amount given by a seller above the exact measure, as a pound in a stone of wool, or a fleece in a pack.
- n. A casting or throwing inward: as, a fan-blower works by incast when it blows or forces the air into a space. Also used adjectively: as, an incast fan.
Sorry, no etymologies found.