# สารหนู
## Noun (N)
### Sense: a pesticide or drug containing arsenic
- arsenical
### Sense: a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar
- arsenic
- As
- atomic number 33
### Sense: a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer
- arsenic trioxide
- arsenous anhydride
- arsenous oxide
- white arsenic
- ratsbane