This section is from the book "The Home Cyclopedia Of General Information", by Charles Morris. Also available from Amazon: Home Cyclopedia of Necessary Knowledge.
[O.E. gad, sting.] An insect that deposits itsyoung in the nostrils of sheep; a species infests cattle, depositing its eggs on the skin and causing sores; another kind produces intestinal parasites in horses.
 
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