Meaning of chokebore

choke•bore

Pronunciation: (chōk'bôr", -bōr"), [key]
— n.
  1. a bore in a shotgun that narrows toward the muzzle to prevent shot from scattering too widely.
  2. a shotgun with such a bore.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.