diminutive of Latin glaber = bald, hence a smooth bony prominence between the eyebrows.
In trilobites, the central region of the head; in vertebrates, the prominent front bone which joins the ridges above the eyes.
a smooth prominence of the frontal bone between and above the eyebrows; the most forward projecting point of the forehead in the midline at the level of the supraorbital ridges
the smooth area between the eyebrows
1. The area between the eyebrows, just above the nose. 2. The corresponding area on the frontal bone between the eyebrow ridges.
The space/area between the eyebrows.