Arsenic is a toxic ELEMENT that has been used as a POISON for centuries. It is a naturally occurring ELEMENT found in the Earth's crust and can be found in many minerals. The term arsenic is derived from the Greek word for 'yellow orpiment.' In the crossword, the term arsenic is solved as a 6 letter word meaning POISON, an 8 letter word meaning poisoner, a 7 letter word meaning ELEMENT, and a 4 letter word meaning LACE. LACE is a type of fabric that was historically used to LACE food and drinks with arsenic as a form of poisoning.