Definition from Wiktionary, the free dictionary
sweight (plural sweights)
- (UK dialectal, Northern England, Scotland) A portion or amount; the greatest amount or the greater part of anything; a multitude; a great number or quantity.
- main sweight
- (UK dialectal, Northern England, Scotland) The force of a moving object or body in motion; violence.
- (UK dialectal, Scotland) A rush; an impetus; a burden, weight, or force.