SULFUR
- The chemical element of atomic number 16, a yellow combustible nonmetal
- The material of which hellfire and lightning were believed to consist
- A pale greenish-yellow color
- An American butterfly with predominantly yellow wings that may bear darker patches
- a non metallic element [n -S] / to treat with sulfur, also SULPHUR [v -ED, -ING, -S]
- to treat with sulfur (a nonmetallic element) [v SULFURED, SULFURING, SULFURS]