chokebore noun 2verb 1forms 3 noun2 •In a shotgun, a bore which is tapered to a slightly smaller diameter at a short distance to the rear of the muzzle, in order to prevent the rapid dispersion of the shot. •A shotgun that is made with such a bore. verb1 •To provide (a gun) with a chokebore. formschokebored · chokeboring · chokebores