sulfur

US /ˈsʌl.fɚ/
UK /ˈsʌl.fɚ/
1.

sulfur

disinfect or fumigate with sulfur.

1.

sulfur

the chemical element of atomic number 16, a yellow combustible nonmetal.

:
we should use coal which contains less sulfur
2.

sulfur

an American butterfly with predominantly yellow wings that may bear darker patches.