/əˈpifəsis/
Noun, pl. epiphyses
1. The rounded end of a long bone, at its joint with adjacent bone(s). The epiphysis is filled with red bone marrow, which produces erythrocytes (red blood cells). (wikipedia.org)
2. A part of a long bone where bone growth occurs from. (biology-online.org)
3. The end of a long bone; initially separated from the main bone by a layer of cartilage that eventually ossifies so the parts become fused. (wordnetweb.princeton.edu)
3. The pineal gland. (wiktionary.org)
4. A small endocrine gland in the brain; situated beneath the back part of the corpus callosum; secretes melatonin. (wordnetweb.princeton.edu)