from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A white crystalline compound, C6H4Cl2, used as a germicide and an insecticide.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. 1,4-dichlorobenzene, an organic compound used as a pesticide (for example in mothballs) and a deodorant.
para- + dichlorobenzene (Wiktionary)