The crossword solution for the term 'ARSENIC' is a 7 letter word. ARSENIC is a chemical element with the symbol As and atomic number 33. It is a metalloid that occurs in nature as a grey-white metallic solid. ARSENIC is most famously known for its use in the 1944 film 'ARSENIC and Old Lace', which starred Cary Grant and was based on the play of the same name by Joseph Kesselring. The film follows the story of two elderly spinster sisters who poison lonely old men with ARSENIC-laced elderberry wine.