Typically, toe walking is simply a habit that develops when a child learns to walk. A short Achilles tendon. This tendon links the lower leg muscles to the back of the heel bone. If it's too short, it can prevent the heel from touching the ground.
- Comes from the knights whose lances were free for hire and who were not pledged to one master; originally, a freelance was a free companion or a person free of occupational or political party obligation or allegiance. See also related terms for hire.
Mad scientist (also mad doctor or mad professor) is a caricature of a scientist who is described as mad or insane owing to a combination of unusual or unsettling personality traits and the unabashedly ambitious, taboo and/or hubristic nature of their experiments.