In Greek antiquity, a ship having a single bank of oars: the earliest form of Greek ship.(noun)
The Century Dictionary (Public Domain)
Use "unireme" in a sentence
"This year he resurrected one of his favorites: an homage to a Roman unireme complete with working oars powered not by tiny little galley slaves (can you envision Charlton Heston a quarter inch tall?) but a remote-controlled motor devised through the mechanical genius of Bob's handiwork."