any unwanted and destructive insect or other animal that attacks food or crops or livestock etc.; "he sprayed the garden to get rid of pests"; "many pests have developed resistance to the common pesticides"
syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours; "he was suffering from radiation"
a toxic condition caused by ingesting or inhaling mercury; acute mercury poisoning causes a metallic taste and vomiting and diarrhea and kidney problems that may lead to death
an informal photograph; usually made with a small hand-held camera; "my snapshots haven't been developed yet"; "he tried to get unposed shots of his friends"
a building where young people receive education; "the school was built in 1932"; "he walked to school every morning"
the process of being formally educated at a school; "what will you do when you finish school?"
a large group of fish; "a school of small glittering fish swam by"
a body of creative artists or writers or thinkers linked by a similar style or by similar teachers; "the Venetian school of painting"
an educational institution; "the school was founded in 1900"
an educational institution's faculty and students; "the school keeps parents informed"; "the whole school turned out for the game"
the period of instruction in a school; the time period when schools is in session; "stay after school"; "he didn't miss a single day of school"; "when the school day was done we would walk home together"
swim in or form a large group of fish; "A cluster of schooling fish was attracted to the bait"
educate in or as if in a school; "The children are schooled at great cost to their parents in private institutions"