The "halo-like" appearance of random, broken and wiry gray hairs sticking out a few inches from the scalp, regardless of surrounding hair length. Commonly observed in adults approaching middle age.
Even though she uses hair gel, her graylo is out of control.
by snorklebots June 20, 2010
a gray-lo is the halo of gray hair around the hair line when a dye job has grown out.
i have got to get to salon for a touch up. my gray-lo has gotten become so bad it is blinding people at ten paces.
by roobella March 14, 2009