noun, plural cal·ca·ne·a [kal-key-nee-uh] /kælˈkeɪ ni ə/.
Examples from the Web for calcaneum
The calcaneum is sometimes produced into a long slender process which helps to support the membrane between the leg and the tail.
The calcaneum resembles that of Artiodactyles in having a small facet for articulation with the fibula.
The calcaneum in Crocodiles is drawn out into a long process forming a heel in a manner almost unique among Sauropsida.
In the tarsus the cuboid articulates with both the calcaneum and the astragalus, which is remarkably flat.
In these more recent forms the fibula articulates with the astragalus instead of with the calcaneum.The Cambridge Natural History, Vol X., Mammalia|Frank Evers Beddard