Plural of glabella; smooth areas between the eyebrows on the forehead, or in anatomy the area between two ridges on body parts.
From Latin 'glabella,' diminutive of 'glaber' meaning 'smooth' or 'hairless.' Used in anatomy since the 17th century for specifically smooth anatomical regions.
The glabella is anatomically significant because it's one area humans instinctively furrow when confused or angry—it's like we have a biological 'uh-oh' indicator built between our eyebrows.
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