calcaneum

[kal-key-nee-uh m] /kælˈkeɪ ni əm/
noun, plural calcanea
[kal-key-nee-uh] /kælˈkeɪ ni ə/ (Show IPA)
1.
Origin
1745-55; short for Latin (os) calcāneum (bone) of the heel, equivalent to calc- (stem of calx) heel + -āneum, neuter of -āneus; see -an, -eous
British Dictionary definitions for calcaneum

calcaneus

/kælˈkeɪnɪəs/
noun (pl) -nei (-nɪˌaɪ), -nea (-nɪə)
1.
the largest tarsal bone, forming the heel in man Nontechnical name heel bone
2.
the corresponding bone in other vertebrates
Derived Forms
calcaneal, calcanean, adjective
Word Origin
C19: from Late Latin: heel, from Latin calx heel