Definition of "insecticide" []

• A chemical substance used to kill insects. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "As any environmentalist can tell you, insecticide is not very nice stuff — especially if you breathe it, which many Third World farmers do as they walk through their fields with backpack sprayers."
• "Phoxim is a short-term insecticide with a "knock-down" effect."
• "For those that don’t know Will – he doesn’t really believe in insecticide, but he and I both agreed this spider was big AND fast enough for the justification for the use of the can of spray."