rodomontade n.

1610s (earlier rodomontado, 1590s), "vain boasting like that of Rodomonte," a character in Ariosto's "Orlando Furioso" (earlier in Boiardo's "Orlando Innamorato," Century Dictionary describes him as "a brave but somewhat boastful leader of the Saracens against Charlemagne." In dialectal Italian the name means literally "one who rolls (away) the mountain." As a verb, "boast, brag, talk big," by 1680s. Related: Rodomont "braggart" (1590s); Rodomontador.