Webster's Revised Unabridged Dictionary · 1913

Briarean

Briarean ({not transcribed}) , adjective

[Latin Briareius, from Briareus a mythological hundred-handed giant, Greek {not transcribed}, from {not transcribed} strong.]

Pertaining to, or resembling, Briareus, a giant fabled to have a hundred hands; hence, hundred-handed or many-handed.