Gallery above the tabernae at the Forum Romanum in Rome, named after the Roman censor M. Maenius [I 3], from where spectators could follow the gladiatorial fights. The principle, attested here for the first time, of building the edge construction of a forum in two stories and constructing it as a bleacher, resp. viewing area on the upper floor, became widespread in the 2nd and 1st cents. BC in Roman architecture ( Forum); thereafter, the tiers in the amphitheatre were known as maeniana ( Theatre).
W.-H. Gross, s.v. M., KlP 3, 864.