The Collaborative International Dictionary
Moliminous
Moliminous \Mo*lim"i*nous\, a. [L. molimen a great exertion;
moles a heavy mass.]
Of great bulk or consequence; very important. [Obs.]
--Dr. H.
More.
Wiktionary
moliminous
a. 1 (context now rare archaic English) momentous, weighty. 2 (context now rare archaic English) laborious, involving or exerting great effort; arduous.