Etymology 1

Adjective

1. Sinuous; curving in alternate directions.

   The serpentine path through the mountains was narrow and dangerous.

2. Having the shape or form of a snake.

   There are serpentine species of lizards which do not have legs.

3. Of, pertaining to, or characteristic of snakes.
4. Of, or having attributes associated with, the mythological serpent, such as craftiness or deceitfulness.

   The wily criminal was known for his serpentine behavior.

Noun

1. Any of several plants believed to cure snakebites.
2. An early form of cannon.
3. A coiled distillation tube.

Etymology 2

Adjective

1. Of or characteristic of serpentine rocks or the plants that grow there.

Noun

1. Any of several green/brown minerals consisting of a magnesium and iron silicates.
2. Any of many minerals that have the same layered crystal structure.
3. An outcrop or region with soil and rock dominated by these minerals.