trichlorophenol
Concise Oxford English Dictionary © 2008 Oxford University Press:
trichlorophenol /ˌtrʌɪklɔːrə(ʊ)ˈfiːnɒl, -klɒr-/
▶noun Chemistry a synthetic crystalline compound used as an insecticide and preservative and in the synthesis of pesticides.
'trichlorophenol' also found in these Oxford entries:

