The Collaborative International Dictionary of English v.0.48:
Glabella \Gla*bel"la\, n.; pl. Glabell[ae]. [NL., fr. L. glabellus hairless, fr. glaber bald.] (Anat.) The space between the eyebrows, also including the corresponding part of the frontal bone; the mesophryon. -- Gla*bel"lar, a. [1913 Webster]WordNet (r) 3.0 (2006):
glabellar adj 1: of or relating to the glabella