1. With a leg on each side: riding astride.
2. With the legs wide apart.

1. On or over and with a leg on each side of.
2. Situated on both sides of.
3. Lying across or over; spanning.

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.