Tests and diagnosis discussion for Gallstones: Many gallstones, especially silent stones, are discovered by accident during tests for other problems. But when gallstones are suspected to be the cause of symptoms, the doctor is likely to do an ultrasound exam. Ultrasound uses sound waves to create images of organs.
Best Answer: A feeder school feeds a particular high school. Usually, it means that all the students from that middle school go to a particular high school. Source(s):
1 Feeder (livestock) 2  Feeder (beekeeping), any of several devices used in apiculture to supplement or replace natural food sources.  Feeder (casting), another name for a riser, a reservoir built into a metal casting mold to prevent cavities due to shrinkage.