Webster’s Revised Unabridged Dictionary · 1913
Monumental
Mon′u·men′tal (mŏn′ū·mĕn′tal), a. [L. monumentalis: cf. F. monumental.] 1. Of, pertaining to, or suitable for, a monument; as, a monumental inscription.
2. Serving as a monument; memorial; preserving memory. "Of pine, or monumental oak." Milton.
A work outlasting monumental brass. Pope.