Blustering, a.
1. Exhibiting noisy violence, as the wind; stormy; tumultuous. A tempest and a blustering day. Shak.
2. Uttering noisy threats; noisy and swaggering; boisterous. "A blustering fellow." L'Estrange.
Shades of meaning
Fernald has no entry of its own for blustering; he lists it under bluff.
He lists it without comment; the entries above explain its neighbors.