home·school (h?m?sko?ol?)v. home·schooled, home·school·ing, home·schools v.tr. To instruct (a pupil, for example) in an educational program outside of established schools, especially in a home.v.intr. To provide educational instruction in a homeschool.n. A school operated outside established educational institutions, especially in a home.home?school?er n.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.