hemal arch n.
Any of three or four V-shaped bones located ventral to the bodies of the third to sixth coccygeal vertebrae and usually enclosing the ventral caudal artery and vein.
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| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a gadget; dingus; thingumbob. |
| hemal arch | |
noun | |
| a structure arising ventrally from a vertebral centrum and enclosing the caudal blood vessels |