the fourteen winter days during which the kingfisher broods and the sea is calm , v. alcedo.—Hence, trop., a deep calm , profound tranquillity : ludi sunt, tranquillum est, alcedonia sunt circum forum, Plaut.Cas. prol. 26: mare ipsum aiunt, ubi alcedonia sint, fieri feriatum, Front. Fer. Alc. 3.