Wiktionary
double-dome
n. (context slang English) ''(mildly derogatory)'' (alternative spelling of doubledome English) An intellectual or scholar.
Usage examples of "double-dome".
When our double-dome experts looked this over they drew the conclusion that you were waited-for, so to speak.
And of those, one was a Brit—British-born, anyhow—and another was Rosenberg, a pony-tailed double-dome, who wasn't even in the fucking corps.
Maybe, she thought, this is how the double-domes feel, at some moment of discovery.