noun
swine
SWYNE/swaɪn/
A pig.
Three swine stand together, showing their snouts and curly tails.

Etymology
Old English swin named pigs and was commonly used for them collectively, explaining the modern singular-or-collective use. It was the older general term before pig largely replaced it.
In context
hooking damaged human lungs that have been taken out of people up to a swine's circulatory system like basically going hey Pig let me hook this lung up to you it can heal the lungs