GRE Vocab; rotunda

Rotunda (n): a round building or room, especially one with a dome

GRE Vocab; metallurgy

Metallurgy (n): the branch of science concerned with properties, production, and purification of metals.

GRE Vocab; Refectory

Refectory (n): a room used for communal meals, especially in an educational or religious institution.  

GRE Vocab; acerbic

Acerbic (adj): bitter or sour in nature; sharp and cutting 

GRE Vocab; forge

Forge (v): make or shape ( a metal object) by heating it and beating or hammering it
               : create (something strong or successful)
           (n): a blacksmiths workshop
                : a furnace or hearth for melting or refining