jamming /ˈd͡ʒæmɪŋ/noun 2adjective 1forms 3 noun2 •The playing of improvisational music.Jamming with the band is her favorite way to find compositional inspiration. •The act or process by which something is jammed.The broadcasts' effectiveness was limited by constant jamming. adjective1 •(slang) Great; awesome.All I knew was it sho was a jamming party! — 2006 formsjammings · more jamming · most jamming