A publicly or privately owned vehicle that is used for taking schoolchildren to and from school or school-related activities. (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.
Use "school bus" in a sentence
"I didn't have a way into the city, so I rode the school bus to Oxford High School, sneaked down to the mall a block away from school and caught a city bus into Anniston."
"But Spencer Longtree rode the school bus with his gang of roughneck buddies."
"Elizabeth was walking Sam to the school bus stop when she noticed a middle-aged fatbody in a silver-gray sedan with Maryland plates watching the house and taking notes."