Medical Definition of dorsiflexion. : flexion in a dorsal direction; especially : flexion of the foot in an upward directionâcompare plantar flexion.
Willis Tower. The Willis Tower, built as and still commonly referred to as Sears Tower, is a 108-story, 1,450-foot (442.1 m) skyscraper in Chicago, Illinois, United States.
Willis, Texas. From Wikipedia, the free encyclopedia. Willis is a city in Montgomery County, Texas, United States, located on the Union Pacific Railroad eight miles north of Conroe in north central Montgomery County.