The crossword solution for the term 'VENOM, FOR INSTANCE' is TOXIN. Toxins are substances that are produced by living organisms and can cause harm to other living organisms. They are usually proteins or peptides and can be found in plants, animals, and bacteria. Venom is a type of TOXIN that is produced by certain animals, such as snakes, spiders, and scorpions, and can be used to defend themselves or to capture prey.