/ˈfibyələ/
Noun, pl. fibulae, fibulas
1. A leg bone located on the lateral side of the tibia, with which it is connected above and below. It is the smaller of the two bones, and, in proportion to its length, the slenderest of all the long bones. (wikipedia.org)
2. The smaller of the two bones in the lower leg, the calf bone. (wiktionary.org)
3. The outer and thinner of the two bones of the human leg between the knee and ankle. (wordnetweb.princeton.edu)
4. A long bone in the lower leg that is adjacent to the tibia. The fibula supports approximately 1/6th of the body weight and produces the lateral (outer) prominence of the ankle. The outer and thinner of the two bones of the human leg between the knee and ankle.A bone found in the legs of tetrapods that lie adjacent to the tibia. (biology-online.org)
Syn: calf bone
Word origin: From Latin fībula (“clasp, buckle”)